U.S. patent application number 10/492535 was filed with the patent office on 2005-04-14 for pulsating vibration air generation apparatus.
Invention is credited to Morimoto, Kiyoshi, Watanabe, Yasushi, Yoshimoto, Hirokazu.
Application Number | 20050076776 10/492535 |
Document ID | / |
Family ID | 19144674 |
Filed Date | 2005-04-14 |
United States Patent
Application |
20050076776 |
Kind Code |
A1 |
Morimoto, Kiyoshi ; et
al. |
April 14, 2005 |
Pulsating vibration air generation apparatus
Abstract
A pulsating vibration air generation apparatus capable of
sharply and quickly controlling air flow in turning on and off
operation, thereby generating a pulsating vibration air with sharp
and hardly attenuated peak and valley, and capable of operation
without occurrence of so much mechanical vibration. The pulsating
vibration air generation apparatus is comprised of a main body
having a tubular hollow space R2 with which two air communication
ports are associated, and a rotary body situated for rotation in
the tubular hollow space R2 and which has a peripheral side surface
S4c so as to slide on the inner surface S2c forming the tubular
hollow space R2.
Inventors: |
Morimoto, Kiyoshi;
(Shizuoka, JP) ; Yoshimoto, Hirokazu; (Sunto-gun
Shizuoka, JP) ; Watanabe, Yasushi; (Sunto-gun
Shizuoka, JP) |
Correspondence
Address: |
BACON & THOMAS, PLLC
625 SLATERS LANE
FOURTH FLOOR
ALEXANDRIA
VA
22314
|
Family ID: |
19144674 |
Appl. No.: |
10/492535 |
Filed: |
November 18, 2004 |
PCT Filed: |
October 25, 2002 |
PCT NO: |
PCT/JP02/11088 |
Current U.S.
Class: |
91/471 |
Current CPC
Class: |
B06B 1/20 20130101; F15B
21/125 20130101; Y10T 137/86405 20150401; Y10T 137/86421
20150401 |
Class at
Publication: |
091/471 |
International
Class: |
F01B 001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 26, 2001 |
JP |
2001-328642 |
Claims
1-5. (canceled)
6. A pulsating vibration air generation apparatus, comprising: a
main body defining a tubular hollow space with which two air
communication ports are associated, one of said two communication
ports being connected to an air source; and a cylindrical rotary
body situated for rotation in said tubular hollow space, said
cylindrical rotary body having a rotary shaft at a position in
alignment with the center axis of said tubular hollow space and a
peripheral side surface so as to slide on the surface forming said
tubular hollow space, said rotary shaft being connected to a rotary
source for rotating said rotary shaft, and said cylindrical rotary
body further having an air communication passage penetrating said
cylindrical rotary body, wherein: said pulsating vibration air
generation apparatus generates pulsating vibration air inside a
pipe connected to the other of said two air communication ports of
said main body by rotating said cylindrical rotary body by the
rotary drive source while driving the air source.
7. The pulsating vibration air generation apparatus as defined in
claim 6, wherein: both of the outer surfaces of said maid body are
formed flat, where each one of said two air communication ports is
provided.
8. The pulsating vibration air generation apparatus as defined in
claim 6, wherein: the air source is an exhaling air source.
9. The pulsating vibration air generation apparatus as defined in
claim 6, wherein: the air source is an inhaling air source.
10. The pulsating vibration air generation apparatus as defined in
claim 6, further comprising: a packing member for creating an
airtight seal between said rotary shaft and a shaft hole formed in
said main body.
11. The pulsating vibration air generation apparatus as defined in
claim 7, wherein: the air source is an exhaling air source.
12. The pulsating vibration air generation apparatus as defined in
claim 7, wherein: the air source is an inhaling air source.
13. The pulsating vibration air generation apparatus as defined in
claim 7, further comprising: a packing member for creating an
airtight seal between said rotary shaft and a shaft hole formed in
said main body.
14. The pulsating vibration air generation apparatus as defined in
claim 8, further comprising: a packing member for creating an
airtight seal between said rotary shaft and a shaft hole formed in
said main body.
15. The pulsating vibration air generation apparatus as defined in
claim 9, further comprising: a packing member for creating an
airtight seal between said rotary shaft and a shaft hole formed in
said main body.
Description
TECHNICAL FIELD
[0001] The present invention relates to a pulsating vibration air
generation apparatus, more specifically to a pulsating vibration
air generation apparatus in which a pulsating vibration air sharply
and quickly controlled in turning on and off operation at a fixed
frequency with sharp and hardly attenuated peak and valley, and the
apparatus itself is capable of generating a pulsating vibration air
without so much vibration under still conditions.
BACKGROUND ART
[0002] The inventors of the present invention have engaged for a
long time in the research and development of a pulsating vibration
air and a pulsating vibration air generation apparatus for
generating a pulsating vibration air and have developed several
kinds of pulsating vibration air.
[0003] Here "pulsating vibration air" means a pulsating air flow of
which the amount of air flow (air pressure) is vibrated in a fixed
cycle and at a fixed amplitude, and includes a pulsating vibration
air of positive pressure and a pulsating vibration air of negative
pressure.
[0004] "Positive pressure" used in this specification means that
the pressure inside the apparatus is higher than the pressure
outside of the apparatus (for example, atmospheric pressure), and
"negative pressure" means that the pressure inside the apparatus is
lower than the pressure outside of the apparatus (for example,
atmospheric pressure).
[0005] FIG. 13 is an explanatory view diagrammatically showing a
pulsating vibration air of positive pressure. FIG. 13a shows a
pulsating vibration air in which the peak amplitude is at the
atmospheric pressure and the bottom amplitude is at negative
pressure, and FIG. 13b shows a pulsating vibration air in which
both of the peak amplitude and the bottom amplitude are at positive
pressure.
[0006] When such a pulsating vibration air of positive pressure is
used as a pneumatic transport air for pneumatically transporting a
powder material for example, the accumulation or blow hole
phenomena of the powder are not caused within a transport pipe and,
thereby being preferably used as a pneumatic transport air for the
pneumatic transportation of powder material. In addition, if it is
used as an air for fluidizing the powder material supplied in a
granulation tank of a fluid-bed granulation apparatus, blow hole
phenomenon is hardly caused for the powder material put in a catch
basin of the granulation tank, thereby being suitably used for a
fluidizing air of the powder material put in the catch basin of the
granulation tank of the fluid-bed granulation apparatus. Further,
if it is used as a powder removing air of a powder removing
apparatus, the powder adhering on the surface of tablets or other
products is completely removed by the strong and weak exhaling
action of the pulsating vibration air, thereby being preferably
used as a powder removing air of the powder removing apparatus.
[0007] FIG. 14 is an explanatory view diagrammatically showing a
pulsating vibration air of negative pressure, FIG. 14a shows a
pulsating vibration air in which the bottom amplitude is at
negative pressure and the peak amplitude is at the atmospheric
pressure, and FIG. 14b shows a pulsating vibration air in which
both of the peak amplitude and the bottom amplitude are at negative
pressure.
[0008] If such a pulsating vibration air of negative pressure is
used as a powder removing air of a powder removing apparatus, the
powder adhering on the surface of tablets or other products is
completely removed by the strong and weak inhaling function of the
pulsating vibration air, thereby being preferably used as a powder
removing air of the powder removing apparatus.
[0009] A typical embodiment of the pulsating vibration air
generation apparatus which generates the pulsating vibration air
shown in FIG. 13 and FIG. 14 and has been already proposed by the
inventors of the present invention is exemplified below.
[0010] FIG. 15 is an explanatory view showing one embodiment of the
pulsating vibration air generation apparatus that has been already
proposed by the inventors of the present invention.
[0011] The pulsating vibration air generation apparatus 101
comprises a cylindrical case 102 and a valve 104, the valve 104
being rotatably provided at a rotary shaft 103 so as to divide the
inside of the case 102 into two spaces R1 and R2, the rotary shaft
103 being provided so as to accord with a center axis of the case
102.
[0012] Two air communication ports h102a and h102b are provided in
the case 102.
[0013] In this embodiment, the two air communication ports h102a
and h102b are arranged on the case 102 right-angled by making the
center of the case 102 into the peak.
[0014] Pipes T1 and T2 are connected to each one of the two air
communication ports h102a and h102b respectively.
[0015] Air source (not shown) is connected to the pipe T1.
[0016] The member shown with the reference numeral 105 in FIG. 15
indicates a flow rate control means provided if necessary.
[0017] Rotary drive means such as an electric motor (not shown) is
connected to the rotary shaft of the valve 104 to rotate the valve
104 at a fixed rotational speed by controlling the rotary drive
means (not shown).
[0018] Next, the operation of the pulsating vibration air
generation apparatus 101 is explained.
[0019] At first operation in, the case that a pulsating vibration
air of positive pressure is generated in the pipe T2 is
explained.
[0020] For generating a pulsating vibration air of positive
pressure inside the pipe T2, an exhaling air source (not shown) is
connected as the air source (not shown) to the pipe T1. As the
exhaling air source (not shown), used are a gas tank in which gas
such as air or nitrogen gas is bottled under pressure, a blower,
and so on. If a blower is used as the air source (not shown), the
discharge port of the blower is connected to the pipe T1.
[0021] Then, a compressed gas is supplied to the pipe T1 from the
air source (not shown).
[0022] The valve 104 is rotated at a fixed rotation speed by
rotating the rotary drive means (not shown) at a fixed rotation
speed.
[0023] When the valve 104 is at the position shown with solid
lines, the air communication ports h102a and h102b are
communicated, so that the compressed gas supplied to the pipe T1
from the air source (not shown) is discharged from the air
communication port h102b into the pipe T2 through the case 102.
[0024] On the other hand, when the valve 104 is at the position
shown with imaginary lines (two-dot dashed line), the communication
port h102a and h102b are not communicated, so that the compressed
gas supplied to the pipe T1 from the air source (not shown) is not
discharged into the pipe T2.
[0025] As the result of repeating these operations while driving
the pulsating vibration air generation apparatus 101, a pulsating
vibration air of positive pressure is generated in the pipe T2.
[0026] Next, the operation in the case that a pulsating vibration
air of negative pressure is generated in the pipe T2 is
explained.
[0027] For generating a pulsating vibration air of negative
pressure inside the pipe T2, an inhaling air source (not shown) is
connected as an air source (not shown) to the pipe T1. As the
inhaling air source (not shown), used are a vacuum pump, a blower
and so on. If a blower is used as the air source (not shown), the
inhaling port of the blower is connected to the pipe T1.
[0028] Then, an inhaled gas directing from the case 202 to the air
source (not shown) is generated in the pipe T1 by driving the air
source (not shown).
[0029] The valve 104 is rotated at a fixed rotation speed by
rotating the rotary drive means (not shown) at a fixed rotation
speed.
[0030] When the valve 104 is at the position shown with solid
lines, the air communication ports h102a and h102b are
communicated, so that an inhaled gas flow (negative pressure) into
the case 102 is generated in the pipe T2.
[0031] On the other hand, when the valve 104 is at the position
shown with imaginary lines (two-dot dashed line), the communication
ports h102a and h102b are not communicated, so that an inhaled gas
flow (negative pressure) into the case 102 is not generated in the
pipe T2.
[0032] As the result of repeating these operations while driving
the pulsating vibration air generation apparatus 101, a pulsating
vibration air of negative pressure is generated in the pipe T2.
[0033] FIG. 16 is an exploded perspective view explaining other
embodiment of the pulsating vibration air generation apparatus that
has been already proposed by the inventors of the present
invention.
[0034] The pulsating vibration air generation apparatus 201 is
comprised of a cylindrical case 202 and a drum-like rotary body 204
rotatably embraced in the case 202 in such a manner that the center
shaft of the rotary body 204 coincides with the center axis of the
case 202.
[0035] Two air communication ports h202a and h202b are provided at
the side surface S202c of the case 202 in such a manner that they
are positioned obliquely interposing the center axis so as to keep
a fixed distance along the center axis of the case 202.
[0036] Bearing 205 to one tip of the rotary shaft 203a of the
rotary body 204 rotatably emplaced in the case 202 is provided at
the center of one end surface S202a of a pair of end surfaces S202a
and S202a of the case 202. At the center of the other end surface
S202b, a shaft hole (not shown) for inserting the other tip of
rotary shaft 203b of the rotary body 204 is provided.
[0037] The drum-like rotary body 204 has the rotary shaft 203a and
203b.
[0038] The outer diameter of the drum-like rotary body 204 is equal
to or a little smaller than the inner diameter of the case 202, so
that the peripheral side surface S204c of the rotary body 204
slides on the inner surface of the case 202 when the rotary body
204 is rotated in the case 202.
[0039] Opening hole h204 is provided in the side surface of the
rotary body 204.
[0040] The opening hole h204 is designed to fit where the air
communication port h202a of the case 202 is provided when the tip
of the rotary shaft 203a of the rotary body 204 is fitted in the
bearing 205 of the case 202.
[0041] One end surface S204a of a pair of end surfaces S204a and
S204b of the rotary body 204 is provided with the rotary shaft 203a
projecting out of the end surface S204a.
[0042] Air communication holes h204b, h204b, h204b, and h204b are
provided in the other end surface S204b of the rotary body 204.
[0043] The rotary axis 203b is provided so as to penetrate the
other end S204b and project out of it.
[0044] In the pulsating vibration air generation apparatus 201, the
rotary body 204 is rotatably embraced in the case 202 such that the
rotary shaft 203a of the rotary body 204 is attached to the bearing
205 of the case 202. Then, the other end surface S204b is attached
in such a manner that the rotary shaft 203b of the rotary body 204
is inserted in the shaft hole (not shown) formed in the other end
surface S204b, so that the rotary body 204 is embraced in the case
202.
[0045] Pipes T1 and T2 are provided in the two air communication
port h202a and h202b respectively.
[0046] Air source (not shown) is connected to the pipe T1.
[0047] Rotary drive means such as an electric motor (not shown) is
connected to the rotary shaft 203b of the rotary body 204 so as to
rotate the rotary body 204 at a fixed rotation speed by controlling
the drive of rotary drive means (not shown).
[0048] Next, the operation of the pulsating vibration air
generation apparatus 201 is explained.
[0049] At first, the operation in the case that a pulsating
vibration air of positive pressure is generated in the pipe T2 is
explained.
[0050] For generating a pulsating vibration air of positive
pressure inside the pipe T2, an exhaling air source (not shown) is
connected as an air source (not shown) to the pipe T1. As the
exhaling air source (not shown), used are a gas tank in which gas
such as air or nitrogen gas is bottled under pressure, a blower and
so on. If a blower is used as the air source (not shown), the
discharge port of the blower is connected to the pipe T1.
[0051] Then, a compressed gas is supplied to the pipe T1 from the
air source (not shown).
[0052] The valve 204 is rotated at a fixed rotation speed by
rotating the rotary drive means (not shown) at a fixed rotation
speed.
[0053] When the opening hole h204a formed on the side surface of
the rotary body 204 comes to the position of the air communication
port h202a provided in the case 202, the air communication port
h202a and h202b are communicated, so that the compressed gas
supplied to the pipe T1 is discharged into the pipe T2 from the air
communication port h102b of the case 202 through the air
communication holes h204b, h204b, h204b and h204b of the other end
surface S202b provided in the rotary body 204 and the inside of the
drum-like rotary body 204.
[0054] On the other hand, the side surface of the rotary body (the
area of the rotary body 204 other than where the opening hole h204a
is provided) comes to the position of the air communication port of
the rotary body 204 (the area of the rotary body 204 other than
where the opening hole h204a is provided), so that the compressed
gas supplied to the pipe T1 from the air source (not shown) is not
discharged into the pipe T2.
[0055] As the result of repeating these operations while the
pulsating vibration air generation apparatus 201 is driven, a
pulsating vibration air of positive pressure is generated in the
pipe T2.
[0056] Next, the operation in the case that a pulsating vibration
air of negative pressure is generated in the pipe T2 is
explained.
[0057] For generating a pulsating vibration air of negative
pressure inside the pipe T2, an inhaling air source (not shown) is
connected as an air source (not shown) to the pipe T1. As the
inhaling air source (not shown), used are a vacuum pump, a blower
and so on. If a blower is used as the air source (not shown), the
inhaling port of the blower is connected to the pipe T1.
[0058] Then, an inhaled gas directing from the case 202 to the air
source (not shown) is generated in the pipe T1 by driving the air
source (not shown).
[0059] The rotary body 104 is rotated at a fixed rotation speed by
rotating the rotary drive means (not shown) at a fixed rotation
speed.
[0060] When the opening 204a formed on the side surface of the
rotary body 204 comes to the position of the air communication port
h202a provided in the case 202, the air communication holes port
and h202b are communicated through the air communication holes
h204b, h204b, h204b and h204b of the other end surface S204b
provided in the rotary body 204 and the inside of the drum-like
body 204, thereby generating an inhaled gas flow (negative
pressure) into the case 202 in the pipe T2.
[0061] On the other hand, the side surface of the rotary body (the
area of the rotary body 204 other than where the opening hole h204a
is provided) comes to the position of the air communication port
h202a, the air communication port h202a is closed by the side
surface of the rotary body 204 (the area of the rotary body 204
other than where the opening hole h204a is provided), so that the
air communication port h202a and h202b are not communicated. As the
result, an inhaled gas flow (negative pressure) into the case 202
is not generated inside the pipe T2.
[0062] As the result of repeating these operations while driving
the pulsating vibration air generation apparatus 201, a pulsating
vibration air of negative pressure is generated inside the pipe
T2.
[0063] FIG. 17 is an explanatory view showing other embodiment of
the pulsating vibration air generation apparatus that has been
already proposed by the inventors of the present invention.
[0064] The pulsating vibration generation apparatus 301 is provided
with a tubular hollow space 302 having air communication port 302a
and 302b, a valve seat 303 provided in the tubular hollow space
302, a valve 304 for opening and closing the valve seat 303, and a
rotary cam 305 to move the valve 304 for opening and closing the
valve seat 303.
[0065] Pipe T1 is connected to the air communication port 302a and
a pipe T2 is connected to the air communication hole 302a.
[0066] Air source 311 is connected to the pipe T1.
[0067] The member shown with the reference numeral 312 in FIG. 17
is a flow rate control means provided if necessary.
[0068] The member shown with the reference numeral 302c in FIG. 17
is a pressure control port provided in the tubular hollow space 302
if necessary, and a pressure control valve 306 is provided in the
tubular hollow space 302 for communicating with and blocking off
the atmosphere.
[0069] The valve 304 has an axis body 304a and a roller 304b is
rotatably provided at the lower end of the axis body 304a.
[0070] Axis containing hole h301 for containing the axis body 304a
of the valve 304 airtightly and movably up and down is formed in a
main body 301a of the pulsating vibration generation means 301.
[0071] The rotary cam 305 is comprised of an inner rotary cam 305a
and an outer rotary cam 305b.
[0072] On each one of the inner rotary cam 305a and the outer
rotary cam 305b, a fixed concavo-convex pattern is formed so as to
keep a distance as wide as the diameter of the rotary roller
304b.
[0073] The rotary roller 304b is rotatably inserted between the
inner rotary cam 305a and the outer rotary cam 305b of the rotary
cam 305.
[0074] The member indicated with the reference numeral "ax" in FIG.
17 is a rotary axis of a rotary drive means such as a motor (not
shown), and the rotary cam 305 is exchangeably attached to the
rotating axis "ax".
[0075] Next, the operation of the pulsating vibration air
generation apparatus 301 is explained.
[0076] At first, the operation in the case that a pulsating
vibration air of positive pressure is generated in the pipe T2 is
explained.
[0077] For generating a pulsating vibration air of positive
pressure inside the pipe T2, an exhaling air source (not shown) is
connected as an air source 311 to the pipe T1. As the exhaling air
source (not shown), used are a gas tank in which gas such as air or
nitrogen gas is bottled under pressure, a blower and so on. If a
blower is used as the air source 311, the discharge port of the
blower is connected to the pipe T1.
[0078] Then, an compressed gas is supplied to the pipe T1 from the
air source 311.
[0079] The rotary cam 305 is rotated at a fixed rotation speed by
rotating the rotary drive means (not shown) at a fixed rotation
speed.
[0080] The rotary roller 304b is rotated between the inner rotary
cam 305a and the outer rotary cam 305b of the rotary cam 305 which
is driven to be rotated at a fixed rotation speed and moved up and
down with high reproducibility, thereby opening and closing the
valve seat 303 with the valve 304 in accordance with the
concavo-convex pattern formed on the rotary cam 305.
[0081] As the result of repeating these operations while driving
the pulsating vibration air generation apparatus 301, a pulsating
vibration air of positive pressure is generated inside the pipe
T2.
[0082] When the pressure control port 302c and the pressure control
valve 306 are provided in the tubular hollow space 302, the
pressure of pulsating vibration air of positive pressure supplied
to the pipe T2 is regulated by appropriately controlling the
pressure control valve 306 provided in the pressure control port
302c.
[0083] Then, the operation in the case that a pulsating vibration
air of negative pressure is generated in the pipe T2 is
explained.
[0084] For generating a pulsating vibration air of negative
pressure inside the pipe T2, an inhaled air source (not shown) is
connected as an air source 311 to the pipe T1. As the inhaled air
source (not shown), used are a vacuum pump, a blower and so on. If
a blower is used as the air source 311, the inhaling port of the
blower is connected to the pipe T1.
[0085] Then, an inhaled gas directing from the case 202 to the air
source 311 is generated inside the pipe T1 by driving the air
source 311.
[0086] The rotary cam 305 is rotated at a fixed rotation speed by
rotating the rotary drive means (not shown) at a fixed rotation
speed.
[0087] The rotary roller 304b is rotated between the inner rotary
cam 305a and the outer rotary cam 305b of the rotary cam 305 which
is driven to be rotated at a fixed rotation speed and moved up and
down with high reproducibility, thereby opening and closing the
valve seat 303 with the valve 304 in accordance with the
concavo-convex pattern formed on the rotary cam 305.
[0088] As the result of repeating these operations while the
pulsating vibration air generation apparatus 301 is driven, a
pulsating vibration air of negative pressure is generated in the
pipe T2.
[0089] The above-mentioned pulsating vibration air generation
apparatus 101, 201 and 301 do not have a problem of heating of an
induction coil, which has been observed for a solenoid type
electromagnetic valve. Therefore, comparing with the solenoid type
electromagnetic valve, those apparatus have a merit in that a
pulsating vibration air can be generated stably for a long
time.
[0090] The pulsating vibration air generation apparatus 101 with
the rotary type valve 104 and the pulsating vibration air
generation apparatus 201 with the drum-type rotary body 204 have an
advantage in that a mechanical vibration is hardly caused while
generating a pulsating vibration air.
[0091] Further, the pulsating vibration air generation apparatus
with a rotary cam 305 has a characteristic that because the valve
seat 303 is opened and closed by moving the valve 304 up and down,
a pulsating vibration air sharply and quickly turning on and off is
generated inside the pipe T2, thereby generating a pulsating
vibration air of which peak or valley is hardly attenuated.
[0092] However, as far as the inventors of the present invention
know, there hasn't been developed a pulsating vibration air
generation apparatus which is capable of generating inside a pipe a
pulsating vibration air sharply and quickly controlled in turning
on and off, and the peak and valley of which is hardly attenuated;
and which does not cause any remarkable mechanical vibration as the
pulsating vibration air generation apparatus 101 with the rotary
type valve 104 and as the pulsating vibration air generation
apparatus 201 with the drum-type rotary body 204.
[0093] Particularly in the case that the pipe for pneumatically
transporting a powder is too long or the pipe connecting the
granulation tank of a fluid-bed granulation apparatus or a powder
removing apparatus with a pulsating vibration air generation
apparatus is too long, it is required to be capable of sharply and
quickly controlling air flow in turning on and off operation, and
generating a pulsating vibration air with sharp and hardly
attenuated peak and valley.
[0094] When a mechanical vibration is generated in the pulsating
vibration air generation apparatus while a pulsating vibration air
is generated by means of the pulsating vibration air generation
apparatus, the mechanical vibration caused in the apparatus spreads
over a pneumatic transportation apparatus, a fluid-bed granulation
apparatus, a powder removing apparatus and so on via a pipe,
thereby generating a phenomenon such that the entire apparatus
similar to a pneumatic transportation apparatus, a fluid-bed
granulation apparatus, a powder removing apparatus and so on is
vibrated.
DISCLOSURE OF THE INVENTION
[0095] The present invention has been proposed to solve the
above-mentioned problems. An object of the present invention is to
provide a pulsating vibration air generation apparatus capable of
sharply and quickly controlling air flow in turning on and off
operation, and generating a pulsating vibration air with sharp and
hardly attenuated peak and valley and also capable of preventing so
much mechanical vibration under still conditions while generating a
pulsating vibration air similar to the pulsating vibration air
generation apparatus 101 using the rotary type valve 104 and the
pulsating vibration air generation apparatus 201 using the
drum-type rotary body 204.
[0096] The pulsating vibration air generation apparatus according
to the present invention (claim 1) comprises a main body of
pulsating vibration air generation apparatus having a tubular
hollow space in which two air communication ports are provided, one
of the two air communication ports being connected to an air
source, and a cylindrical rotary body rotatably embraced in the
tubular hollow space of the main body of pulsating vibration air
generation apparatus, the cylindrical rotary body comprising a
rotary shaft at a position in alignment with the center axis of the
tubular hollow space and a peripheral side surface formed so as to
slide on the surface forming the tubular hollow space of the main
body, the rotary shaft being connected to a rotary source for
rotating the rotary shaft, and the cylindrical rotary body further
comprising an air communication passage penetrating the cylindrical
rotary body, wherein the pulsating vibration air generating
apparatus generates pulsating vibration air inside a pipe connected
to the other of the two air communication port of the main body by
rotating the cylindrical rotary body by the rotary drive source
while driving the air source.
[0097] In the pulsating vibration air generation apparatus, the
rotary body is rotated in such a manner that the peripheral side of
the rotary body slides on the inner surface forming the tubular
hollow space provided in the main body of pulsating vibration air
generation apparatus.
[0098] Therefore, so far as the two air communication ports
provided in the main body of pulsating vibration air generation
apparatus are not communicated by means of a through hole provided
in the rotary body, the compressed gas supplied from one of the two
air communication ports provided in the main body of pulsating
vibration air generation apparatus is not discharged from the other
of the two air communication ports.
[0099] As mentioned above, according to the pulsating vibration air
generation apparatus, the following phenomena are repeated. That
is, in the case the rotary body is rotated at a fixed rotation
speed in the tubular hollow space provided in the main body of
pulsating vibration air generation apparatus, the compressed gas
supplied from one of the two air communication ports provided in
the main body is discharged from the other of the air communication
ports only when both of the two air communication ports provided in
the main body are communicated through the communication passage
provided in the rotary body accompanied by the rotation of the
rotary body. When both of the two air communication ports provided
in the main body of pulsating vibration air generation apparatus
are not communicated, the compressed gas supplied from one of the
two air communication ports provided in the main body is not
discharged from the other of the air communication ports.
[0100] As a result, with this pulsating vibration air generation
apparatus, the compressed gas fed from one of the two air
communication ports provided in the main body of pulsating
vibration air generation apparatus is supplied, the rotary body is
rotated at a fixed rotation speed in the tubular hollow space
provided in the main body, a pulsating vibration air of positive
pressure sharply and quickly controlled in turning on and off
operation at a fixed frequency with sharp and hardly attenuated
peak and valley can be generated from the other of the two air
communication ports provided in the main body.
[0101] Open and close operations of the two air communication ports
provided in the main body of pulsating vibration air generation
apparatus are achieved by the rotation of the rotary body having
the communication passage, therefore, the pulsating vibration air
generation apparatus itself hardly causes so much vibration while a
positive pulsating vibration air is generated.
[0102] As far as the two air communication ports provided in the
main body of pulsating vibration air generation apparatus are not
communicated by the communication passage of the rotary body, even
when one of the two air communication holes provided in the main
body is inhaled, an inhaled air flow generated by inhaling the one
of the air communication port is not generated at the other of the
air communication ports.
[0103] As mentioned above, according to the pulsating vibration air
generation apparatus, the following phenomena are repeated. That
is, in the case one of the two air communication ports provided in
the main body of pulsating vibration air generation apparatus is
inhaled, and the rotary body is rotated at a fixed rotation speed
in the tubular hollow space provided in the main body of pulsating
vibration air generation apparatus, only when both of the two air
communication ports provided in the main body are communicated
through the communication passage provided in the rotary body
accompanied by the rotation of the rotary body, an inhaled air flow
is generated at the other of the two air communication holes of the
main body. When both of the two air communication ports provided in
the main body of pulsating vibration air generation apparatus are
not communicated, the inhaled air flow is not generated at the
other of the two air communication ports of the main body.
[0104] As a result, with this pulsating vibration air generation
apparatus, when one of the two air communication ports provided in
the main body of pulsating vibration air generation apparatus is
inhaled, and the rotary body is rotated at a fixed rotation speed
in the tubular hollow space provided in the main body, a pulsating
vibration air of negative pressure sharply and quickly controlled
in turning on and off operation at a fixed frequency with sharp and
hardly attenuated peak and valley can be generated from the other
one of the two air communication holes provided in the main
body.
[0105] Open and close operations of the two air communication ports
provided in the main body of pulsating vibration air generation
apparatus are achieved by the rotation of the rotary body having
the communication passage, therefore, the pulsating vibration air
generation apparatus itself hardly causes any remarkable vibration
while a negative pulsating vibration air is generated.
[0106] The pulsating vibration air generation apparatus according
to the present invention (claim 2) is a pulsating vibration air
generation apparatus according to the above-mentioned invention
(claim 1) in which both of the outer surfaces of the main body are
formed flat, where each one of the two air communication ports is
provided.
[0107] In such a pulsating vibration air generation apparatus, both
of the outer surfaces of the main body are formed flat, where each
one of the two air communication ports is provided, therefore,
there generates no gap between the communication port provided in
the main body of pulsating vibration air generation apparatus and
each pipe when a pipe is connected to each one of the two air
communication ports of the main body respectively.
[0108] Therefore, dust and other powder are not gathered at the
connected part between each pipe and the main body of pulsating
vibration air generation apparatus, thereby keeping the pulsating
vibration air generation apparatus clean. Further, the clean room
or other room in which the pulsating vibration air generation
apparatus is provided is kept clean for a long time.
[0109] The pulsating vibration air generation apparatus according
to the present invention (claim 3) is a pulsating vibration air
generation apparatus according to the above-mentioned invention
(claim 1 or 2), wherein the air source of the pulsating vibration
air generation apparatus is an exhaling air source.
[0110] In this pulsating vibration air generation apparatus, the
above-mentioned pulsating vibration air generation apparatus is
used, and the exhaling air source is connected to one of the two
air communication ports of the main body of pulsating vibration air
generation apparatus, when the compressed air source is driven to
rotate the rotary body at a fixed rotation speed in the main body,
a pulsating vibration air of positive pressure sharply and quickly
controlled in turning on and off operation at a fixed frequency
with sharp and hardly attenuated peak and valley can be generated
from the other one of the two air communication holes provided in
the main body.
[0111] Open and close operations of the two air communication ports
provided in the main body of pulsating vibration air generation
apparatus are achieved by the rotation of the rotary body having
the communication passage, therefore, the pulsating vibration air
generation apparatus itself hardly causes any remarkable vibration
while a positive pulsating vibration air is generated.
[0112] The pulsating vibration air generation apparatus according
to the present invention (claim 4) is a pulsating vibration air
generation apparatus according to the above-mentioned invention
(claim 1 or 2), wherein the air source of the pulsating vibration
air generation apparatus is an inhaling air source.
[0113] In this pulsating vibration air generation apparatus, the
above-mentioned pulsating vibration air generation apparatus is
used, and the inhaled air source is connected to one of the two air
communication ports of the main body of pulsating vibration air
generation apparatus, when the inhaled air source is driven to
rotate the rotary body at a fixed rotation speed in the main body,
a pulsating vibration air of negative pressure sharply and quickly
controlled in turning on and off operation at a fixed frequency
with sharp and hardly attenuated peak and valley can be generated
from the other one of the two air communication holes provided in
the main body.
[0114] Open and close operations of the two air communication ports
provided in the main body of pulsating vibration air generation
apparatus are achieved by the rotation of the rotary body having
the communication passage, therefore, the pulsating vibration air
generation apparatus itself hardly causes any remarkable vibration
while a negative pulsating vibration air is generated.
[0115] The pulsating vibration air generation apparatus according
to the present invention (claim 5) is a pulsating vibration air
generation apparatus according to the above-mentioned invention
(any one of claims 1 to 4), whrein a packing member for airtightly
sealing between the rotary shaft and a shaft hole formed in the
main body of pulsating vibration air generation apparatus is
provided.
[0116] In this pulsating vibration air generation apparatus, the
packing member is provided in airtightly sealing between the rotary
shaft and the shaft hole formed in the main body of pulsating
vibration air generation apparatus. When a compressed gas is
supplied from one of the two air communication ports provided in
the main body of pulsating vibration air generation apparatus in
order to produce a pulsating vibration air of positive pressure,
the compressed gas thus supplied from the one of the two air
communication ports does not leak to the atmosphere from between
the rotary shaft and the shaft hole formed in the main body. In
addition, when one of the two air communication holes provided in
the main body of pulsating vibration air generation apparatus is
inhaled in order to produce a pulsating vibration air of negative
pressure, the atmospheric air is not inhaled into the main body
from between the rotary shaft and the shaft hole formed in the main
body.
[0117] Therefore, according to such constructed pulsating vibration
air generation apparatus, even when a positive pulsating vibration
air is generated or a negative pulsating vibration air is
generated, a positive pulsating vibration air or a negative
pulsating vibration air can be generated while reducing the energy
loss against the driving amount of air source (an exhaling air
source for generating a positive pulsating vibration air and an
inhaling air source for generating a negative pulsating vibration
air).
BRIEF DESCRIPTION OF DRAWINGS
[0118] FIG. 1 is an exploded perspective view diagrammatically
showing one embodiment of a pulsating vibration air generation
apparatus according to the present invention.
[0119] FIG. 2 is a perspective view diagrammatically showing the
appearance of the pulsating vibration air generation apparatus of
FIG. 1.
[0120] FIG. 3 is a sectional view diagrammatically showing the
pulsating vibration air generation apparatus of FIG. 1.
[0121] FIG. 4 is a perspective view of the appearance showing how a
pipe is connected to each one of the two air communication ports
provided in the pulsating vibration air generation apparatus in
FIG. 1.
[0122] FIG. 5 is a sectional view showing how the pipe is connected
to each one of the two air communication ports provided in the
pulsating vibration air generation apparatus in FIG. 1.
[0123] FIG. 6 is an explanatory view diagrammatically showing the
phenomenon caused in the main body of pulsating vibration air
generation apparatus in FIG. 1, FIG. 6a shows that the two air
communication ports provided in the main body are intercepted, and
FIG. 6b shows that two air communication ports provided in the main
body are communicated.
[0124] FIG. 7 is an explanatory view showing other embodiment of a
pulsating vibration air generation apparatus according to the
present invention. FIG. 7a is an explanatory view diagrammatically
showing two air communication ports formed on a tubular hollow
space of a main body of pulsating vibration air generation
apparatus are intercepted, and FIG. 7b is an explanatory view
diagrammatically showing the two air communication ports formed on
the tubular hollow space of the main body of pulsating vibration
air generation apparatus are communicated.
[0125] FIG. 8 is an explanatory view showing other embodiment of a
pulsating vibration air generation apparatus according to the
present invention and is a perspective view of an appearance
diagrammatically explaining the condition before a pipe is
connected to the pulsating vibration air generation apparatus.
[0126] FIG. 9 is a perspective view of an appearance
diagrammatically explaining the condition after the pipe is
connected to the pulsating vibration air generation apparatus shown
in FIG. 8.
[0127] FIG. 10 is a structure view diagrammatically explaining a
pneumatic transportation apparatus using a pulsating vibration air
generation apparatus according to the present invention.
[0128] FIG. 11 is a structure view diagrammatically explaining a
powder removing apparatus using a pulsating vibration air
generation apparatus according to the present invention.
[0129] FIG. 12 is a structure view diagrammatically explaining a
fluid-bed granulation apparatus using a pulsating vibration air
generation apparatus 1 according to the present invention.
[0130] FIG. 13 is an explanatory view diagrammatically showing a
pulsating vibration air of positive pressure. FIG. 13a shows a
pulsating vibration air in which the peak amplitude is at positive
pressure and the bottom amplitude is at the atmospheric pressure,
and FIG. 13b shows a pulsating vibration air in which both of the
peak amplitude and the bottom amplitude are at positive
pressure.
[0131] FIG. 14 is an explanatory view diagrammatically showing a
pulsating vibration air of negative pressure. FIG. 14a shows a
pulsating vibration air in which the bottom amplitude is at
negative pressure and the peak amplitude is at the atmospheric
pressure, and FIG. 14b shows a pulsating vibration air in which
both of the peak amplitude and the bottom amplitude are at negative
pressure.
[0132] FIG. 15 is an explanatory view showing one embodiment of a
pulsating vibration air generation apparatus that has been already
proposed by the inventors of the present invention.
[0133] FIG. 16 is an exploded perspective view explaining other
embodiment of a pulsating vibration air generation apparatus that
has been already proposed by the inventors of the present
invention.
[0134] FIG. 17 is an explanatory view showing other embodiment of a
pulsating vibration air generation apparatus that has been already
proposed by the inventors of the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
[0135] Now, a pulsating vibration air generation apparatus
according to the present invention is further explained referring
to the attached drawings.
[0136] FIG. 1 is an exploded perspective view diagrammatically
showing one embodiment of a pulsating vibration air generation
apparatus according to the present invention. FIG. 2 is a
perspective view diagrammatically showing the appearance of the
pulsating vibration air generation apparatus of FIG. 1. FIG. 3 is a
sectional view diagrammatically showing the pulsating vibration air
generation apparatus of FIG. 1. FIG. 4 is a perspective view of the
appearance showing how a pipe is connected to each one of two air
communication ports provided in the pulsating vibration air
generation apparatus in FIG. 1. FIG. 5 is a sectional view showing
how the pipe is connected to each one of the two air communication
ports provided in the pulsating vibration air generation apparatus
in FIG. 1.
[0137] The pulsating vibration air generation apparatus 1 has a
main body of pulsating vibration air generation apparatus 2 and a
cylindrical rotary body 4.
[0138] At first, the shape and structure of the main body of
pulsating vibration air generation apparatus 2 are explained.
[0139] The main body of pulsating vibration air generation
apparatus 2 is cylindrical and has a main body 2A of the apparatus,
covers 11 and 12 for sealing a pair of end surfaces of the main
body 2A of the apparatus, respectively, packing members 13 and 14
to be fitted in each one of the covers 11 and 12, and covers 15 and
16 for sealing packing members.
[0140] The main body of pulsating vibration air generation
apparatus 2 (more specifically, the main body 2A of the apparatus)
is made of metal such as stainless steel and has a tubular hollow
space R2.
[0141] Two air communication ports h2a and h2b (see the air
communication ports h2b in FIG. 3) are provided in the tubular
hollow space R2.
[0142] Inner surface S2c forming the tubular hollow space R2 of the
main body of pulsating vibration air generation apparatus 2 (more
specifically, the main body 2A of the apparatus) is mirror finished
in such a manner that the side surface S4c of the rotary body 4
(more specifically a main member 4A of the rotary body) smoothly
slides on the inner surface S2c constituting the tubular hollow
space R2 of the main body of pulsating vibration air generation
apparatus 2 (more specifically, the main body 2A of the apparatus),
so that the rotary body 4 (more specifically a main member 4A of
the rotary body) is easily rotated in the tubular hollow space R2
in the main body of pulsating vibration air generation apparatus 2
(more specifically, the main body 2A of apparatus).
[0143] An air source (not shown) is connected to the one air
communication port h2a of the two air communication ports h2a and
h2b via a pipe T1.
[0144] Pipe T2 indicates a pipe where a pulsating vibration air is
generated.
[0145] Bolt holes h2c . . . for screwing with fixing means 17 . . .
such as bolts are formed on a first surface S2a of the main body 2A
of the apparatus. Further, bolt holes (see bolt holes h2d and h2d
in FIG. 3) for screwing with fixing means 18 . . . such as bolts
are formed on a second surface S2b of the main body 2A of the
apparatus (see the second surface S2b in FIG. 3).
[0146] In this embodiment, the connection between the pipe T1 and
the air communication port h2a is achieved by screwing one end of
the pipe t1 with a thread into the air communication port h2a
having a thread inside. Further, the connection between the pipe T2
and the air communication port h2b is achieved by screwing the end
of the pipe T2 with a thread into the air communication port h2b
having a thread inside.
[0147] The cover 11 is disc-shaped, made of metal such as stainless
steel, the outer diameter of which is the same or substantially the
same diameter as that of the main body 2A of the apparatus, and the
cover 11 has a concave part C11 for containing the packing member
13.
[0148] The concave part for containing packing member (see the
concave part C12 for containing packing member in FIG. 3) is
disk-shaped in a plan view.
[0149] The outer diameter of the concave part for containing
packing member (see the concave part C11 for containing packing
member in FIG. 3) provided in the cover 11 is the same as or is a
litter smaller than the diameter of the tubular hollow space R2
provided in the main body 2A of the apparatus. When the cover 11 is
attached to the main body 2A of the apparatus, the outer part of
the concave part for containing packing member (see the concave
part C11 for containing packing member in FIG. 3) provided in the
cover 11 is fitted in the tubular hollow space R2 provided in the
main body 2A of the apparatus.
[0150] The surface S11d, the outer part of the concave part for
containing packing member (see the concave part C12 for containing
packing member in FIG. 3) provided in the cover 11 on which the
first surface S4a of the rotary body 4 (more specifically, the main
member 4A of the rotary body) slides is mirror finished in such a
manner that the end surface S4a of the rotary body 4 (more
specifically, the main member 4A of the rotary body) is rotated
while smoothly sliding on the surface S11d in the tubular hollow
space R2 in the main body of pulsating vibration air generation
apparatus 2 (more specifically, the main body 2A of the
apparatus).
[0151] Further, the first surface S11a of the cover 11 is also
mirror finished, so that the cover 1 and the cover 15 for sealing
packing member are air tightly contacted when the cover 15 for
sealing packing member is attached to the cover 11.
[0152] The second surface S11b and the side surface S11c forming
the outer part of the concave part for containing packing member
(see the concave part C11 for containing packing member in FIG. 3)
provided in the cover 11 are mirror finished, so that the cover 11
and the main body 2A of the apparatus are airtightly contacted when
the cover 11 is attached to the main bodybody 2A of the
apparatus.
[0153] A shaft hole h11a for inserting a rotary shaft 3b of the
rotary body 4 is formed in the center of the cover 11 (more
specifically, at the bottom of the concave part C11 for containing
packing body).
[0154] Bolt holes h11b . . . are formed on the cover 11 in order to
attach the cover 11 to the main body 2A of the apparatus by means
of fixing means 17 . . . .
[0155] The cover 12 is disc-shaped, made of metal such as stainless
steel, the outer diameter of which is the same as or substantially
the same as that of the main body 2A of the apparatus, and has the
same size and the shape as the cover 11.
[0156] The cover 12 has a concave partbody (seethe concave part C12
for containing packing body in FIG. 3) for containing the packing
body 14.
[0157] The concave part for containing packing body (seethe concave
part C12 for containing packing body in FIG. 3) is disc-shaped in a
plan view.
[0158] The surface S12d, the outer part of the concave part for
containing packing member (seethe concave part C12 for containing
packing member in FIG. 3) provided in the cover 12 on which the
second surface S4b of the rotary body 4 (more specifically, the
main member 4A of the rotary body) slides is mirror finished in
such a manner that the second surface S4b of the rotary body 4
(more specifically, the main member 4A of the rotary body) smoothly
slides on the surface S12d in the tubular hollow space R2 in the
main body of pulsating vibration air generation apparatus 2 (more
specifically, the main body 2A of the apparatus).
[0159] Further, the first surface S12a of the cover 12 is also
mirror finished, so that the cover 12 and the cover 16 for sealing
packing member are airtightly contacted when the cover 16 for
sealing packing member is attached to the cover 12.
[0160] The second surface S12b and the side surface S12c forming
the outer part of the concave part for containing packing member
(see the concave part C12 for containing packing member in FIG. 3)
provided in the cover 12 are mirror finished, so that the cover 12
and the main body 2A of the apparatus are airtightly contacted when
the cover 12 is attached to the main body 2A of the apparatus.
[0161] A shaft hole h12a for inserting a rotary shaft of the rotary
body 4 (rotary axis 3a in FIG. 3) is formed in the center of the
cover 12 (more specifically, the concave part for containing
packing member (see the concave part C12 for containing packing
member in FIG. 3)).
[0162] Bolt holes h12b . . . are formed on the cover 12 in order to
attach the cover 12 to the main body 2A of the apparatus by means
of fixing means 18 . . . .
[0163] The outer diameter of the concave part for containing
packing member (see the concave part C12 for containing packing
member in FIG. 3) provided in the cover 12 is the same as or is a
little smaller than the diameter of the tubular hollow space R2
provided in the main body 2A of the apparatus. When the cover 12 is
attached to the main body 2A of the apparatus, the outer part of
the concave part for containing packing member (see the concave
part C12 for containing packing member in FIG. 3) provided in the
cover 12 is fitted in the tubular hollow space R2 provided in the
main body 2A of the apparatus.
[0164] Packing member 13 is disc-shaped.
[0165] A shaft hole h13 for inserting the rotary shaft 3b of the
rotary body 4 is provided at the center of the packing member
13.
[0166] This embodiment uses a packing member which is made of hard
silicone rubber and of which outer diameter is the same as or a
little smaller than the inner diameter of the concave part C11 for
containing packing member provided in the cover 11 as the packing
member 13.
[0167] In this embodiment, the packing member 13 is constructed in
order to prevent the packing member 13 from resisting rotation of
the rotary body 4, such that a cut-out portion R13 in the shape of
ring is formed so as to surround the circumference of the shaft
hole h13 aiming to reduce the weight, a ring-like through hole h13a
is formed for the cut-out portion R13 so as to penetrate the first
surface S13a of the packing member 13 and the cut-out portion 13,
and a ring-like through hole h13b is formed for the cut-out portion
R13 so as to penetrate the second surface S13a of the packing
member 13 and the cut-out portion 13 to facilitate the elastic
deformation of the packing member 13.
[0168] Packing member 14 is also disc-shaped.
[0169] A shaft hole h14 for inserting the rotary shaft 3a of the
rotary body 4 is formed in the center of the packing member 14.
[0170] This embodiment uses a packing member which is made of hard
silicone rubber and the outer diameter of which is the same as or a
little smaller than the inner diameter of the concave part for
containing packing member provided in the cover 12 as the packing
member 14.
[0171] In this embodiment, the packing member 14 is constructed in
order to prevent the packing member 14 from resisting rotation of
the rotary body 4, such that a cut-out portion R14 in the shape of
ring is formed so as to surround the circumference of the shaft
hole h14 aiming to reduce the weight, a ring-like through hole h14a
is formed for the cut-out portion R14 so as to penetrate the first
surface S14a of the packing member 14 and the cut-out portion 14 to
facilitate the elastic deformation of the packing member 14, and a
ring-like through hole h14b is formed for the cut-out portion R14
so as to penetrate the second surface S13a of the packing member 14
and the cut-out portion 14 to facilitate the elastic deformation of
the packing member 14.
[0172] The cover 15 for sealing packing member is made of metal
such as stainless steel and has a shaft hole h15a for inserting the
rotary shaft 3b of the rotary body 4 at the center thereof.
[0173] The second surface S15b of the cover 15 for sealing packing
member is mirror finished, so that the cover 15 for sealing packing
member and the cover 11 are airtightly contacted when the cover 11
is attached to the cover 15 for sealing packing member.
[0174] Bolt holes h15b . . . are formed on the cover 15 for sealing
packing member in order to attach the cover 15 for sealing packing
member to the cover 11 by means of fixing means 17 . . . .
[0175] In this embodiment, the cover 15 for sealing packing member
has a concave part for containing packing member (see the concave
part C15 for containing packing member in FIG. 3).
[0176] As shown in FIG. 3, in this embodiment, the total height of
the depth H15 of the concave part C15 for containing packing member
provided in the cover 15 for sealing packing member and the depth
H11 of the concave part C11 for containing packing member provided
in the cover 11 is designed to be the same as or is a little larger
than the thickness H13 of the packing member 13 when the cover 15
for sealing packing member is attached to the cover 11.
[0177] The cover 16 for sealing packing member is made of metal
such as stainless steel.
[0178] The second surface S16b of the cover 16 for sealing packing
member is mirror finished, so that the cover 16 for sealing packing
member and the cover 12 are airtightly contacted when the cover 16
for sealing packing member is attached to the cover 12.
[0179] Screw holes h16b . . . are formed on the cover 16 for
sealing packing member in order to attach the cover 16 for sealing
packing member to the cover 12 by means of fixing means 18 . . .
.
[0180] In this embodiment, the cover 16 for sealing packing member
has a concave part for containing packing member (see the concave
part C16 for containing packing member in FIG. 3).
[0181] As shown in FIG. 3, in this embodiment, the total height of
the depth H16 of the concave part C16 for containing packing member
provided in the cover 16 for sealing packing member and the depth
H12 of the concave part C12 for containing packing member provided
in the cover 12 is designed to be the same as or is a little larger
than the thickness H14 of the packing member 13 when the cover 16
for sealing packing member is attached to the cover 12.
[0182] Next, the shape and structure of the rotary body 4 are
explained.
[0183] The rotary body 4 has a main member 4A of the rotary body
and a rotary shaft 3b and 3b which are provided so as to accord
with the center axis of the main member 4A of the rotary body.
[0184] The main member 4A of the rotary body, the rotary shaft 3a
and the rotary shaft 3b are made of metal in this embodiment.
[0185] The main member 4A of the rotary body is cylinder-shaped,
the height H4 is the same as or a little smaller than the height of
the tubular hollow space R2 of the main body of pulsating vibration
air generation apparatus 2 (more specifically, the main body 2A of
the apparatus). The diameter of the main member 4A of rotary body
is designed to be the same as or a litter smaller than the diameter
of the tubular hollow space R2 of the main body of pulsating
vibration air generation apparatus 2 (more specifically, the main
body 2A of the apparatus).
[0186] The side surface S4c of the main member 4A of the rotary
body is mirror finished in such a manner that the main member 4A of
rotary body is smoothly rotated in the tubular hollow space R2 of
the main body of pulsating vibration air generation apparatus 2
(more specifically, the main body 2A of the apparatus) while the
side surface S4c slides on the inner surface S2c forming the
tubular hollow space R2 of the main body of pulsating vibration air
generation apparatus 2 (more specifically, the main body 2A of the
apparatus).
[0187] The first surface S4a and the second surface S4b of the main
member 4A of the rotary body are mirror finished in order that the
main member 4A of the rotary body is smoothly rotated in the
tubular hollow space R2 of the main body of pulsating vibration air
generation apparatus 2 (more specifically, the main body 2A of the
apparatus).
[0188] A communication passage h4 is provided in the rotary body 4
(more specifically the main member 4A of rotary body).
[0189] The communication passage h4 is provided such that the ends
eh4a and eh4b thereof come to the position of each one of the air
communication ports h2a and h2b provided in the main body of
pulsating vibration air generation apparatus 2 (more specifically,
the main body 2A of the apparatus) respectively when the rotary
body 4 is rotatably embraced in the main body of pulsating
vibration air generation apparatus 2 (more specifically, the main
body 2A of the apparatus).
[0190] In this embodiment, the diameter of the communication
passage h4 is the same as or is substantially the same as the inner
diameter of the pipe T1 and the inner diameter of the pipe T2.
[0191] This embodiment uses the rotary shaft 3b having a first
rotary shaft part 3b1 and a second rotary shaft part 3b2 of which
diameter is a little smaller than that of the first rotary shaft
part 3b1.
[0192] The diameter of the first rotary shaft part 3b1 is the same
as or a little smaller than the diameter of the shaft hole h11a
formed in the center of the cover 11 (more specifically, the bottom
of the concave portion C11 for containing packing member).
[0193] The length of the first rotary shaft part 3b l is the same
as or is substantially the same as the length of the shaft hole
h11a formed in the cover 11.
[0194] The diameter of the second rotary shaft part 3b2 is the same
as or a little larger than the diameter of the shaft hole h13a
formed in the center of the packing member 13.
[0195] Therefore, when the second rotary axis part 3b2 is inserted
into the shaft hole h12a of the packing member 13, the packing
member 13 is elastically deformed by the second rotary shaft part
3b2, which is in turn tighten by the resilience. Thus the second
rotary shaft part 3b2 is fixedly attached to the packing member 13
at a contact position of the secondary rotary shaft part 3b2 and
the shaft hole h12a of the packing member 13.
[0196] This embodiment uses the rotary shaft 3a having a first
rotary shaft part 3a1 and a second rotary shaft part 3a2 of which
diameter is a little smaller than that of the first rotary shaft
3a1.
[0197] The diameter of the first rotary shaft part 3a1 is the same
as or a little smaller than the diameter of the shaft hole h12a
formed in the center of the cover 12 (more specifically, the bottom
of the concave portion C12 for containing packing member).
[0198] The length of the first rotary shaft part 3a1 is the same as
or is substantially the same as the length of the shaft hole h12a
formed in the cover 12.
[0199] The diameter of the second rotary shaft part 3a2 is the same
as or a little larger than the diameter of the shaft hole h14
formed in the center of the packing member 14.
[0200] Therefore, when the second rotary axis part 3a2 is inserted
into the shaft hole h14 of the packing member 14, the packing
member 14 is elastically deformed by the second rotary shaft part
3a2, which is in turn tighten by the resilience. Thus the second
rotary shaft part 3a2 is fixedly attached to the packing member 14
at a contact position of the second rotary shaft part 3a2 and the
shaft hole h14 of the packing member 14.
[0201] Next, the structure procedure of the pulsating vibration air
generation apparatus 1 is exemplified.
[0202] At first, the cover 12 is attached to the main body 2A of
the apparatus.
[0203] The rotary body 4 is contained in the main body 2A of the
apparatus.
[0204] Simultaneously the rotary shaft 3a provided in the rotary
body 4 is inserted in the shaft hole h12a of the cover 12.
[0205] The rotary shaft 3a (more specifically the second rotary
shaft part 3a2) projecting out of the cover 12 from the shaft hole
h12a thereof is inserted in the shaft hole for rotary shaft h14
formed in the center of the packing member 14.
[0206] Thus, the packing member 14 is contained in the concave
portion C12 for containing packing member provided in the cover
12.
[0207] The cover 16 for sealing packing member is attached to the
cover 12 in such a manner that the packing member 14 is contained
in the concave portion C12 for containing packing member of the
cover 12 and in the concave portion C16 for containing packing
member of the cover 16 for sealing packing member.
[0208] The cover 12 and/or the cover 16 for sealing the packing
member are/is rotated against the main body 2A of the apparatus 2A
such that all of the screw holes formed on the second surface S2b
of the main body 2A of the apparatus (see screw holes h2d and h2d
in FIG. 3), the screw holes h12b . . . formed on the cover 12, and
the screw holes h16b . . . formed on the cover 16 for sealing
packing member are aligned respectively. Thereafter, the cover 12
and the cover 16 for sealing packing member are screwed on the main
body 2A of the apparatus with each one of fixing means 18 . . . ,
thereby fixing the cover 12 and the cover 16 for sealing packing
member to the main body 2A of the apparatus.
[0209] Then, the rotary shaft 3b provided in the rotary body 4
contained in the main body 2A of the apparatus is inserted into the
shaft hole h11a of the cover 11, thus the cover 11 is attached to
the main body 2A of the apparatus.
[0210] The packing member 13 is contained in the concave part C11
for containing packing member of the cover 11 in such a manner that
the rotary shaft 3b (more specifically the second rotary shaft part
3b2) projecting out of the cover 11 via the shaft hole h11a thereof
is inserted in the shaft hole h13 of the packing member 13.
[0211] The cover 15 for sealing packing member is attached to the
cover 11 such that the rotary shaft 3b (more specifically the
second rotary shaft part 3b2) projecting out of the cover 11 via
the shaft hole 11a thereof is inserted into the shaft hole h15a of
the cover 15 for sealing packing member and the packing member 13
is contained in the concave portion C11 for containing packing
member of the cover 11 and in the concave portion C15 for
containing packing member of the cover 15 for sealing packing
member.
[0212] The cover 11 and/or the cover 15 for sealing packing member
are/is rotated against the main body 2A of the apparatus such that
all of the screw holes h2c . . . formed on the first surface S2a of
the main body 2A of apparatus, the screw holes h11b . . . formed on
the cover 11, and the screw holes h15b . . . formed on the cover 15
for sealing packing member 15 are aligned respectively. Thereafter,
the cover 11 and the cover 15 for sealing packing member are
screwed on the main body 2A of the apparatus with each one of
fixing means 17 . . . , thereby fixing the cover 11 and the cover
15 for sealing packing member to the main body 2A of the
apparatus.
[0213] Thus, the assembly of the pulsating vibration air generation
apparatus 1 is completed.
[0214] Next, the operations of the pulsating vibration air
generation apparatus 1 are explained.
[0215] The pipe T1 is connected to the air communication port h2a
provided in the main body 2 (more specifically the main body 2A of
the apparatus) of the pulsating vibration air generation apparatus
1 and the air connection port h2b is connected to the pipe T2 of
the pulsating vibration air generation apparatus (see FIG. 4 and
FIG. 5).
[0216] The rotary drive means such as an electric motor (not shown)
is connected to the rotary shaft 3b projecting from the main body 2
of the pulsating vibration generation apparatus 1.
[0217] The rotary drive means (not shown) is designed to control
the rotary drive amount.
[0218] At first, the operation in the case for generating a
pulsating vibration air of positive pressure is explained.
[0219] For generating a pulsating vibration air of positive
pressure inside the pipe T2, a compressed air source (not shown) is
connected as an air source (not shown) to the pipe T1. As the
compressed air source (not shown), used are a gas tank in which gas
such as air or nitrogen gas is bottled under pressure, a blower and
so on. If a blower is used as the air source (not shown), the
discharge port of the blower is connected to the pipe T1.
[0220] Then, a compressed gas is supplied to the pipe T1 from the
air source (not shown).
[0221] The rotary body 4 is driven to be rotated at a fixed
rotation speed by driving the rotary drive means (not shown) at a
fixed rotation speed in the main body of pulsating vibration air
generation apparatus 2.
[0222] The rotary body 4 (more specifically, main body 4A of the
rotary body) is rotated at a fixed rotation speed in the tubular
hollow space R2 of the main body of pulsating vibration air
generation apparatus 2 (more specifically, the main body 2A of the
apparatus) while the side surface S4c of the rotary body 4 is
sliding on the inner side circumference S2c forming the tubular
hollow space R2 of the main body of pulsating vibration air
generation apparatus 2.
[0223] FIG. 6 is an explanatory view diagrammatically showing the
phenomena caused in the main body of pulsating vibration air
generation apparatus 2. FIG. 6a shows that two air communication
ports h2a and h2b provided in the main body 2 are intercepted, and
FIG. 6b shows that two air communication ports h2a and h2b provided
in the main body are communicated.
[0224] When each end eh4a and eh4b of the communication passage h4
provided in the rotary body 4 does not come to the position which
meets each one of the two air communication ports h2a and h2b of
the main body of pulsating vibration air generation apparatus 2 as
shown in FIG. 6a, the air communication port h2a and h2b are not
communicated, so that the compressed gas supplied from the pipe T1
to the main body 2 is not discharged into the pipe T2.
[0225] On the other hand, when each end eh4a and eh4b of the
communication passage h4 provided in the rotary body 4 comes to the
position which meets each one of the two air communication ports
h2a and h2b of the main body of pulsating vibration air generation
apparatus 2 as shown in FIG. 6a, the air communication ports h2a
and h2b are communicated, so that the compressed gas supplied from
the pipe T1 to the main body 2 is discharged into the pipe T2.
[0226] Further, when each end eh4a and eh4b of communication
passage h4 provided in the rotary body 4 comes to the position
which meets each one of the two air communication ports h2a and h2b
of the main body of pulsating vibration air generation apparatus 2
as shown in FIG. 6b, the air communication ports h2a and h2b are
communicated, so that the compressed gas supplied from the pipe T1
to the main body of pulsating vibration air generation apparatus 2
is discharged in the pipe T2.
[0227] Repeating the above-mentioned operations while driving the
pulsating vibration air generation apparatus 1, a pulsating
vibration air of positive pressure is generated in the pipe T2.
[0228] According to the pulsating vibration air generation
apparatus 1, the air communication ports h2a and h2b are
communicated while the rotary body 4 is once rotated in the main
body of pulsating vibration air generation apparatus 2 in the
following two cases: in the case that the end eh4a of the
communication passage h4 fits the air communication port h2a and
simultaneously the end eh4b of the communication passage h4 fits
the air communication port h2b; and in the case that the end eh4b
of the communication passage h4 fits the air communication port h2a
and simultaneously the end eh4a of the communication passage h4
fits the air communication port h2b. Except for the above-mentioned
two case, the air communication ports h2a and h2b are not
communicated.
[0229] As shown in FIG. 6a, the pulsating vibration air generation
apparatus 1 is constructed such that the rotary body 4 (more
specifically, the main member 4A of the rotary body) slides on the
inner side circumference S2c forming the tubular hollow space R2 in
the main body of pulsating vibration air generation apparatus 2.
Therefore, while the air communication ports h2a and h2b are not
communicated, the compressed gas supplied to the main body of
pulsating vibration air generation apparatus 2 from the air source
(not shown) via the pipe T1 is not discharged into the pipe T2.
[0230] Only when the air communication ports h2a and h2b are
communicated by the communication passage h4, the compressed gas
supplied to the main body of pulsating vibration air generation
apparatus 2 from the air source (not shown) via the pipe T1 is
discharged into the pipe T2.
[0231] As the result, a pulsating vibration air of positive
pressure sharply and quickly controlled in turning on and off
operation at a fixed frequency of which peak and valley are hardly
attenuated can be generated in the pipe T2 with the pulsating
vibration air generation apparatus 1.
[0232] In the pulsating vibration air generation apparatus 1, the
rotary body 4 is rotated in the tubular hollow space R2 in the main
body of pulsating vibration air generation apparatus 2. Unlike the
pulsating vibration air generation apparatus 301 in FIG. 17 in
which a pulsating vibration air is generated by opening and closing
the valve seat 303 by moving the valve 304 up and down by the
rotary cam mechanism, remarkable vibration thus caused by opening
and closing operations of the valve 304 is not generated in the
present pulsating vibration air generation apparatus 1.
[0233] Further, according to the pulsating vibration air generation
apparatus 1, the packing member 13 is provided in order to prevent
air leak between the rotary shaft 3b (more specifically the first
rotary shaft part 3b1) and the shaft hole h11a formed in the cover
11. Therefore, the compressed gas does not leak out of the cover 11
from the gap therebetween.
[0234] In addition, the cover 11 is airtightly covered with the
cover 15 for sealing packing member interposing the packing member
13, so that the compressed gas does not leak out of the cover 15
for sealing packing member from the gap between the through hole
h15a in the cover 15 for sealing packing member and the rotary
shaft 3b (more specifically the second rotary shaft part 3b2).
[0235] Still further, according to the pulsating vibration air
generation apparatus 1, the sealing packing member 14 is provided
in order to prevent air leak between the rotary shaft 3a (more
specifically the first rotary shaft part 3a1) and the shaft hole
h12a formed in the cover 12. Therefore, the compressed gas does not
leak out of the cover 12 from the gap therebetween.
[0236] In addition, the cover 12 is airtightly covered with the
cover 16 for sealing packing member interposing the packing member
14, so that the compressed gas does not leak out of the cover 16
for sealing packing member.
[0237] According to the above-mentioned pulsating vibration air
generation apparatus 1, the compressed gas supplied from the main
body of pulsating vibration air generation apparatus 2 through the
pipe T1 from the air source (compressed air source, not shown) is
efficiently converted into a pulsating vibration air of positive
pressure by the pulsating vibration air generation apparatus 1 to
generate the pulsating vibration air of positive pressure inside
the pipe T2.
[0238] Next, the operation in the case for generating a pulsating
vibration air of negative pressure is explained.
[0239] For generating a pulsating vibration air of negative
pressure inside the pipe T2, an inhaling air source (not shown) is
connected as an air source (not shown) to the pipe T1. As the
inhaling air source (not shown), used are a vacuum pump, a blower
and so on. If a blower is used as the air source (not shown), the
inhaling port of the blower is connected to the pipe T1.
[0240] Then, the air source (not shown) is driven to generate a
inhaled gas directing from the main body of pulsating vibration air
generation apparatus 2 to the air source (not shown) in the pipe
T1.
[0241] The rotary body 4 is rotated at a fixed rotation speed by
rotating the rotary drive means (not shown) at a fixed rotation
speed in the main body of pulsating vibration air generation
apparatus 2.
[0242] The rotary body (more specifically, main member 4A of the
rotary body) 4 is rotated at a fixed rotation speed in the tubular
hollow space R2 in the main body of pulsating vibration air
generation apparatus 2 (more specifically, the main body 2A of the
apparatus) while the side surface S4c of the rotary body 4 slides
on the inner side surface S2c forming the tubular hollow space R2
of the main body 2.
[0243] When each end eh4a and eh4b of the communication passage h4
provided in the rotary body 4 does not come to the position which
meets each one of the two air communication ports h2a and h2b of
the main body of pulsating vibration air generation apparatus 2 as
shown in FIG. 6a, the air communication ports h2a and h2b are not
communicated, so that an inhaled air flow (negative pressure)
directing to the main body 2 is not generated in the pipe T2.
[0244] On the other hand, when each end eh4a and eh4b of the
communication passage h4 provided in the rotary body 4 comes to the
position which meets each one of the two air communication ports
h2a and h2b of the main body of pulsating vibration air generation
apparatus 2 as shown in FIG. 6b, the air communication holes h2a
and h2b are communicated, so that an inhaled air flow (negative
pressure) directing to the main body 2 from the pipe T2 is
generated in the pipe T2.
[0245] Further, when each end eh4a and eh4b of the communication
passage h4 provided in the rotary body 4 comes to the position
which meets each one of the two air communication ports h2a and h2b
of the main body of pulsating vibration air generation apparatus 2
as shown in FIG. 6b, the air communication ports h2a and h2b are
not communicated, so that a suction mode air flow (negative
pressure) directing to the main body 2 from the pipe T2 is
generated in the pipe T2.
[0246] Repeating the above-mentioned operations while driving the
pulsating vibration air generation apparatus 1, a pulsating
vibration air of negative pressure is generated in the pipe T2.
[0247] According to the pulsating vibration air generation
apparatus 1, the air communication ports h2a and h2b are
communicated while the rotary body 4 is once rotated in the main
body of pulsating vibration air generation apparatus in the
following two cases: in the case that the end eh4a of the
communication passage h4 fits the air communication port h2a and
simultaneously the end eh4b of the communication passage h4 fits
the air communication port h2b; and in the case that the end eh4b
of the communication passage h4 fits the air communication port h2a
and simultaneously the end eh4a of the communication passage h4
fits the air communication port h2b. Except for the above tow
cases, the air communication ports h2a and h2b are not
communicated.
[0248] As shown in FIG. 6a, the pulsating vibration air generation
apparatus 1 is constructed such that the rotary body 4 (more
specifically, the main member 4A of the rotary body) slides on the
inner side circumference S2c forming the tubular hollow space R2 in
the main body of pulsating vibration air generation apparatus 2.
Therefore, while the air communication ports h2a and h2b are not
communicated, an inhaled air flow (negative pressure) directing to
the main body 2 from the pipe T2 is not generated in the pipe
T2.
[0249] Only when the air communication holes h2a and h2b are
communicated by the communication passage h4, an inhaled air flow
(negative pressure) directing to the main body of pulsating
vibration air generation apparatus 2 from the pipe T2 is generated
in the pipe T2 with the pulsating vibration air generation
apparatus 1.
[0250] As the result, a pulsating vibration air of negative
pressure sharply and quickly controlled in turning on and off
operation at a fixed frequency with sharp and hardly attenuated
peak and valley can be generated in the pipe T2 with the pulsating
vibration air generation apparatus 1.
[0251] In the pulsating vibration air generation apparatus 1, the
rotary body 4 is rotated in the tubular hollow space R2 in the main
body of pulsating vibration air generation apparatus 2. Unlike the
pulsating vibration air generation apparatus 301 in FIG. 17 in
which a pulsating vibration air is generated by opening and closing
the valve seat 303 by moving the valve 304 up and down by the
rotary cam mechanism, remarkable vibration caused by such open and
close operations of the valve 304 is not generated in the present
pulsating vibration air generation apparatus 1.
[0252] Further, according to the pulsating vibration air generation
apparatus 1, the packing member 13 is provided in order to prevent
air leak between the rotary shaft 3b (more specifically the first
rotary shaft part 3b1) and the shaft hole h11a formed in the cover
11. Therefore, the atmospheric air does not enter in the cover 11
from the gap therebetween.
[0253] In addition, the cover 11 is airtightly covered with the
cover 15 for sealing packing member interposing the packing member
13, so that the atmospheric air does not come into the cover 15 for
sealing packing member from the gap between the shaft hole h15a
formed in the cover 15 for sealing packing member and the rotary
shaft 3b (more specifically the second rotary shaft part 3b2).
[0254] Still further, according to the pulsating vibration air
generation apparatus 1, the packing member 14 is provided in order
to prevent air intrusion between the rotary shaft 3a (more
specifically the first rotary shaft part 3a1) and the shaft hole
h12a formed in the cover 12. Therefore, the atmospheric air does
not come into the cover 12 from the gap therebetween.
[0255] In addition, the cover 12 is airtightly covered with the
cover 16 for sealing packing member interposing the packing member
14, so that the atmospheric air does not come into the cover 16 for
sealing packing member.
[0256] According to the above-mentioned pulsating vibration air
generation apparatus 1, an inhaled air flow (negative pressure)
directing from the main body of pulsating vibration air generation
apparatus 2 to the air source (inhaling air source) in the pipe T1
is efficiently converted into a pulsating vibration air of negative
pressure by the pulsating vibration air generation apparatus 1 to
generate a pulsating vibration air of negative pressure inside the
pipe T2.
[0257] In the above-mentioned explanation, according to the
pulsating vibration air generation apparatus 1, the air
communication ports h2a and h2b are formed on the center line of
the tubular hollow space R2 of the main body of pulsating vibration
air generation apparatus 2 (more specifically the main body 2A of
the apparatus). Further, the communication passage h4 is designed
to be on the center line of the rotary body (more specifically the
main member 4A of the rotary body) at the same position in which
the air communication port h2a and h2b are provided in the main
body of pulsating vibration air generation apparatus 2 (more
specifically the main body 2A of the apparatus) when the rotary
body 4 (more specifically the main member 4A of the rotary body) is
embraced in the main body 2 (more specifically the main body 2A of
the apparatus) in such a manner that the communication passage h4
is capable of aligning with the air communication ports h2a and h2b
provided in the tubular hollow space R2 in the main body 2 (more
specifically the main body 2A). However, the pulsating vibration
air generation apparatus 1 is one example to explain the pulsating
vibration air generation apparatus of the present invention.
Therefore, the pulsating vibration air generation apparatus of the
present invention is not limited to the pulsating vibration air
generation apparatus 1.
[0258] FIG. 7 is an explanatory view showing other embodiment of a
pulsating vibration air generation apparatus according to the
present invention. FIG. 7a is an explanatory view diagrammatically
showing two air communication ports h2a and h2b formed on the
tubular hollow space R2 of the main body of pulsating vibration air
generation apparatus 2 (more specifically the main body 2A of the
apparatus) are intercepted, and FIG. 7b is an explanatory view
diagrammatically showing two air communication ports h2a and h2b
formed on the tubular hollow space R2 of the main body of pulsating
vibration air generation apparatus 2 (more specifically the main
body 2A of the apparatus) are communicated.
[0259] According to the pulsating vibration air generation
apparatus of the present invention, similar to the pulsating
vibration air generation apparatus 1A shown in FIG. 7a and FIG. 7b,
the air communication ports h2a and h2b are provided out of
alignment with the center line of the tubular hollow space R2 of
the main body of pulsating vibration air generation apparatus 2
(more specifically the main body 2A of the apparatus). Further,
when the rotary body 4 is embraced in the main body of pulsating
vibration air generation apparatus 2 (more specifically the main
body of apparatus 2A) such that the communication passage h4 is
capable of aligning with the air communication ports h2a and h2b
provided in the tubular hollow space R2 in the main body 2 (more
specifically the main body 2A of the apparatus), the communication
passages h4a and/or h4b are/is designed to be out of alignment with
the center line of the rotary body (more specifically the main
member 4A of the rotary body) at the same position on which the air
communication ports h2a and h2b are provided in the main body 2
(more specifically the main body 2A of the apparatus).
[0260] As shown in FIG. 7a and FIG. 7b, when two communication
passages h4a and h4b are provided in the rotary body 4, the
pulsating vibration air generation apparatus in which the air
communication ports h2a and h2b are communicated twice while the
rotary body 4 is rotated in the main body of pulsating vibration
air generation apparatus 2 (more specifically the main body 2A of
the apparatus) at once is achieved.
[0261] If only one of communication passages h4a and h4b is
provided in the rotary body 4, the pulsating vibration air
generation apparatus in which the air communication ports h2a and
h2b are communicated once while the rotary body 4 is rotated in the
main body of pulsating vibration air generation apparatus 2 (more
specifically the main body 2A of the apparatus) at once is
achieved.
[0262] Other structure of the pulsating vibration air generation
apparatus 1A is the same as that of the pulsating vibration air
generation apparatus 1, so that their explanations are omitted
here.
[0263] FIG. 8 and FIG. 9 are explanatory views showing other
embodiment of a pulsating vibration air generation apparatus
according to the present invention. FIG. 8 is a perspective view of
an appearance diagrammatically explaining the condition before a
pipe is connected to the pulsating vibration air generation
apparatus. FIG. 9 is a perspective view of an appearance
diagrammatically explaining the condition after the pipe is
connected to the pulsating vibration air generation apparatus shown
in FIG. 8.
[0264] The pulsating vibration air generation apparatus 1B has the
same structure with the pulsating vibration air generation
apparatus 1 other than that the appearance of the main body of
pulsating vibration air generation apparatus 2 is different from
that of the pulsating vibration air generation apparatus 1.
Therefore, the members corresponding to those of the pulsating
vibration air generation apparatus 1 have the same reference
numerals to eliminate their explanation.
[0265] According to the pulsating vibration air generation
apparatus 1B, the surfaces S2f and S2g on which the air
communication ports h2a and h2b of the main body of pulsating
vibration air generation apparatus 2 (more specifically the main
body 2A of the apparatus) are provided are flat.
[0266] In this embodiment, although the shape of the main body of
pulsating vibration air generation apparatus 2 (more specifically
the main body 2A of the apparatus) is cubic, the shape may be
rectangular or other shape as far as the surfaces S2f and S2g on
which the air communication ports h2a and h2b of the main body 2
(more specifically the main body 2A of the apparatus) are provided
are flat.
[0267] In the pulsating vibration air generation apparatus 1B, the
surfaces S2f and S2g on which the air communication ports h2a and
h2b of the main body of pulsating vibration air generation
apparatus 2 (more specifically the main body 2A of the apparatus)
are provided are flat. When the pipe T1 is connected to the air
communication port h2a of the main body of pulsating vibration air
generation apparatus 2 (more specifically the main body 2A of the
apparatus), there causes no gap between the end of the pipe T1 and
the surface S2f. Further, when the pipe T2 is connected to the air
communication port h2b of the main body of pulsating vibration air
generation apparatus 2 (more specifically the main body 2A of the
apparatus), there causes no gap between the end of the pipe T2 and
the surface S2g.
[0268] Thus, according to the pulsating vibration air generation
apparatus 1B, any gap is not formed between the end of the pipe T1
and the surface S2f and between the end of the pipe T2 and the
surface S2g, therefore, dust and so on are hardly adhered on the
connection of the pipe T1 and the surface S2f and the connection of
the end of the pipe T2 and the surface S2g, so that the pulsating
vibration air generation apparatus 1B and the clean room and other
rooms in which the pulsating vibration air generation apparatus 1B
is provided is not hardly contaminated with dust.
[0269] As mentioned above, the pulsating vibration air generation
apparatus according to the present invention has a specific effect
such that it can generate a pulsating vibration air sharply and
quickly controlled in turning on and off operation at a fixed
frequency with sharp and hardly attenuated peak and valley , and
further does not cause any remarkable vibration thereof.
[0270] Further, the pulsating vibration air generation apparatus of
the present invention can convert the compressed gas or a inhaled
air flow (negative pressure) generated by driving an air source is
effectively converted into a pulsating vibration air of positive
pressure or negative pressure.
[0271] Now, preferable usages of the pulsating vibration air
generation apparatus according to the present invention are
exemplified.
[0272] FIG. 10 is a structure view diagrammatically explaining a
pneumatic transportation apparatus using the pulsating vibration
air generation apparatus 1 according to the present invention.
[0273] The pneumatic transportation apparatus 51 has an air source
52, a filter 53, the pulsating vibration air generation apparatus
1, a pneumatic transport pipe (piping) T2, a pipe T1 for connecting
the air source 52 and the pulsating vibration air generation
apparatus 1, and a material storage hopper 54 connected in
midstream of the pneumatic transport pipe (piping) T2.
[0274] One end of the pneumatic transport pipe T2 is connected to
the air communication port of the pulsating vibration air
generation apparatus 1 (see the air communication port h2b in FIG.
5). And the other end (not shown) of the pneumatic transport pipe
T2 is connected to the place to which the powder material put in
the material storage hopper 54 is to be transported.
[0275] In the pneumatic transportation apparatus 51, a blower is
used as the air source 52.
[0276] One end of the pipe T1 is connected to the air communication
port of the pulsating vibration air generation apparatus 1 (see the
air communication hole h2a in FIG. 5) and the other end is
connected to the discharge port of the air source (blower) 52.
[0277] The air filter 53 is provided in removing the dust in the
air and is provided in the inhaling side of the air source (blower)
52 in this embodiment.
[0278] A material feed valve 55 is provided in a material discharge
port 54a of the material storage hopper 54, so that by opening the
material feed valve 55, the material is fed to the pneumatic
transport pipe (piping) T2 via a material feed pipe 56 connecting
the material storage hopper 54 and the pneumatic transport pipe.
(piping) T2.
[0279] Next exemplified is the pneumatic transporting method with
the pneumatic transportation apparatus 51 in which the powder
material stored in the material storage hopper 54 is transported to
the destination via the transport pipe (piping) T2.
[0280] In this case, the powder material to be pneumatically
transported to the destination is stored in the material storage
hopper 54.
[0281] Then, the air source (blower) 52 is driven at a fixed drive
amount.
[0282] The rotary drive means (not shown) connected to the rotary
shaft 3b of the pulsating vibration air generation apparatus 1 is
driven to be rotated at a fixed drive amount.
[0283] By this operation, a predetermined pulsating vibration air
of positive pressure is generated in the pneumatic transport pipe
(piping) T2.
[0284] The material feed valve 55 repeats opening and closing
operations for a fixed time with a specific interval.
[0285] While the material feed valve 55 is opened, a fixed amount
of powder material stored in the material storage hopper 54 is fed
in the pneumatic transport pipe (piping) T2 via the material feed
pipe 56, and thus supplied powder material is mixed and dispersed
with the pulsating vibration air of positive pressure, which is
sequentially transported from one end to the other end of the
pneumatic transport pipe (piping) T2, which is further
pneumatically transported to the other end of the pneumatic
transport pipe (piping) T2.
[0286] The frequency of the pulsating vibration air of positive
pressure used for the above-mentioned pneumatic transportation
varies depending on the property of the powder material stored in
the material storage hopper 54, and it is difficult to determine it
as a whole. However, the frequency less than 10 Hz should be
applied in general.
[0287] The pulsating vibration air of positive pressure generated
by the pulsating vibration air generation apparatus according to
the present invention is hardly attenuated because the pulsating
vibration air of positive pressure is generated by means of the
pulsating vibration air generation apparatus 1 in the pneumatic
transportation apparatus 51.
[0288] Therefore, in particular, if the transport pipe (piping) T2
of the pneumatic transportation apparatus 51 is long, accumulation
and blow hole phenomena are not caused in the transport pipe
(piping) T2.
[0289] Accordingly, even when the transport pipe (piping) T2 of the
pneumatic transportation apparatus 51 is long, a fixed amount of
powder material discharged from the material storage hopper 54 can
be transported to its destination without reducing the amount.
[0290] Further according to the pneumatic transportation apparatus
51, while the pulsating vibration air of positive pressure is
generated, the pulsating vibration air generation apparatus 1
itself does not cause any vibration, so that the pneumatic
transport pipe (piping) T2 connected to the pulsating vibration air
generation apparatus 1 is scarcely vibrated.
[0291] In the pneumatic transportation apparatus 51, even when a
powder material is pneumatically transported for a long time, the
connected parts of the members of the pneumatic transportation
apparatus 51 are not loosened, staggered, or removed.
[0292] FIG. 11 is a structure view diagrammatically explaining a
powder removing apparatus using the pulsating vibration air
generation apparatus 1 according to the present invention.
[0293] The powder removing apparatus 61 has an air source 62, a
filter 63, the pulsating vibration air generation apparatus 1, a
main body of powder removing apparatus 64, a pipe T2 connecting the
main body of powder removing apparatus 64 and the pulsating
vibration air generation apparatus 1, a pipe T1 connecting the air
source 62 and the pulsating vibration air generation apparatus 1, a
supply apparatus 65 for supplying the material to be removed the
powder thereon, and a storage tank 66 for storing the material of
which powder is removed.
[0294] In this powder removing apparatus 61, a blower is used as
the air source 52.
[0295] One end of the pipe T1 is connected to an air communication
port of the pulsating vibration air generation apparatus 1 (see the
air communication port h2a in FIG. 5) and the other end thereof is
connected to an inhaling port of the air source (blower) 52.
[0296] The filter 63 is provided in preventing the powder which is
removed from the material from dispersing in the atmosphere and is
connected in midstream of the pipe T2.
[0297] On end of the pneumatic pipe (piping) T2 is connected to an
air communication port of the pulsating vibration air generation
apparatus 1 (see the air communication port h2b in FIG. 5), and the
other end thereof (not shown) is connected to an inhaling port h64
provided in the upper part of the main body of powder removing
apparatus 64.
[0298] The main body of powder removing apparatus 64 has a material
supply port 64a from which the material to be removed the powder
thereof is supplied and a material discharge port 64b for
discharging the material of which powder is removed.
[0299] The material supply port h64a is provided in the upper part
of one end of the main body of powder removing apparatus 64, and
the material discharge port 64b is provided in the lower part of
the other end of the main body of powder removing apparatus 64.
[0300] The material supply port h64a is provided under the material
discharge port 65b for discharging the material of which powder is
to be removed of the supply apparatus 65 for supplying the material
to be removed the powder thereof.
[0301] The material discharge port h64b is provided above a
material supply port 66a of the storage tank 66 for storing the
material of which powder is removed.
[0302] Concavo-convex surface 67 is provided in the main body of
powder removing apparatus 64 in a manner that a convex part with a
fixed width and a concave part with a fixed width are alternately
formed.
[0303] The pitch dimension of the concave part of the
concavo-convex surface 67 is smaller than the diameter of the
material to be removed the powder thereof which is supplied on the
concavo-convex surface 67.
[0304] The concavo-convex surface 67 is formed stepwise from the
position under the material supply port 64a provided at the upper
part of the one end of the main body of powder removing apparatus
65 and to the position above the material discharge port 64b
provided at the lower part of the other end of the apparatus 64 for
supplying the material to be removed the powder thereof.
[0305] More specifically, the concavo-convex surface 67 is formed
from the highest step 67a under the material supply port 64a
provided at the upper part of one end of the main body of powder
removing apparatus 65 to the lowest step 67b provided above the
material discharge port provided at the other end of the supply
apparatus 64 for supplying the material to be removed the powder
thereof so as to go down stepwise.
[0306] The method for removing powder attached on the material
surface from the surface of the powder material stored in the
supply apparatus 65 for supplying the material to be removed the
powder thereof by means of the powder removing apparatus 61 is
exemplified.
[0307] At first, the material to be removed the powder thereof (for
example, tablets) is stored in the supply apparatus 65 for
supplying the material to be removed the powder thereof.
[0308] Then the air source (blower) 62 is driven at a fixed drive
amount.
[0309] Simultaneously the rotary drive means (not shown) connected
to the rotary shaft 3b of the pulsating vibration air generation
apparatus 1 is rotated at a fixed drive amount.
[0310] Thus a pulsating vibration air of negative pressure
directing from the main body of powder removing apparatus 64 to the
pulsating vibration air generation apparatus 1 is generated in the
pneumatic transport pipe (piping) T2.
[0311] The pulsating vibration air of negative pressure directing
to the air inhaling port h64 is also generated in the main body of
powder removing apparatus 64.
[0312] Then the material (for example tablets) with the powder to
be removed thereof which is stored in the material supply apparatus
65 is supplied to the material supply port 64a of the main body of
powder removing apparatus 64 from the material supply port 64a of
the material supply apparatus 65.
[0313] The material (for example tablets) with the powder to be
removed thereof which is thus supplied in the main body of powder
removing apparatus 64 from the material supply port 64a falls at
the highest step 67a of the concavo-convex surface 67.
[0314] The material (for example tablets) thus fallen on the
highest step 67a of the concavo-convex surface 67 is inhaled
strongly and weakly by the pulsating vibration air of negative
pressure generated in the main body of powder removing apparatus
64, so that the powder is removed from the surface of the material
with the powder to be removed thereof.
[0315] The powder removed from the surface of the material (for
example tablets) with the powder to be removed thereon is mixed and
dispersed with a pulsating vibration air of negative pressure to be
inhaled into the pipe T2.
[0316] The powder removed from the surface of the material (for
example tablets) inhaled in the pipe T2 is removed by the filter 63
provided in midstream of the pipe T2.
[0317] The material (for example tablets) with the powder to be
removed thereof which falls on the highest step 67a of the
concavo-convex surface 67 moves from the highest step 67a to the
lowest step 67b while the powder adhered on the material (for
example tablets) is removed by being inhaled strongly and weakly by
the pulsating vibration air of negative pressure generated in the
main body of powder removing apparatus 64. Then the material
(tablets) from which surface powder adhered is removed is
sequentially discharged from the material discharge port 64b
provided at the lower part of the other end of the supply apparatus
65 for supplying the material to be removed the powder thereof into
the material supply port 66a of the storage tank 66. Thus the
material (for example tablets) from which powder adhered thereon is
removed is sequentially stored in the storage tank 66.
[0318] According to this powder removing apparatus 61, a pulsating
vibration air of negative pressure is generated with the pulsating
vibration air generation apparatus 1, so that the pulsating
vibration air of negative pressure generated by the pulsating
vibration air generation apparatus of the present invention is
hardly attenuated.
[0319] Therefore, according to the powder removing apparatus 61,
the material (for example tablets) with the adhered powder to be
thereon which is supplied on the concavo-convex surface 67 of the
main body of powder removing apparatus 64 is strongly and weakly
inhaled by means of the pulsating vibration air of negative
pressure generated in the main body of the powder removing
apparatus 64, so that the powder adhered on the surface of the
material (for example tablets) is completely removed.
[0320] Further, the material (for example tablets) with the adhered
powder to be removed thereof which is supplied on the
concavo-convex surface 67 of the main body of the powder removing
apparatus 64 is strongly and weakly inhaled by means of the
pulsating vibration air of negative pressure generated in the main
body of powder removing apparatus 64, so that the material (for
example tablets) with the powder to be removed thereof fallen on
the highest step 67a of the concavo-convex surface 67 moves into
the lowest step 67b of the concavo-convex surface 67 without
staying in its midstream, thereby sequentially stored in the
storage tank 66.
[0321] Thus, with the powder removing apparatus 61, powder-removing
operation of the material (for example tablets) with the powder to
be removed thereof is efficiently executed.
[0322] Further, according to the powder removing apparatus 61,
while the pulsating vibration air of negative pressure is
generated, the pulsating vibration air generation apparatus 1
itself does not cause vibration, so that the pneumatic transport
pipe (piping) T2 connected to the pulsating vibration air
generation apparatus 1 is scarcely vibrated.
[0323] In the powder removing apparatus 61, even when
powder-removing operation is executed for a long time, the
connected parts of the members of the powder removing apparatus 61
are not loosened, staggered, or removed.
[0324] FIG. 12 is a structure view diagrammatically explaining a
fluid-bed granulation apparatus using the pulsating vibration air
generation apparatus 1 according to the present invention.
[0325] The fluid-bed granulation apparatus 71 has an air source 72,
a filter 73, the pulsating vibration air generation apparatus 1, a
granulation tank 74, a pipe T2 connecting the granulation tank 74
and the pulsating vibration air generation apparatus 1, a pipe T1
connecting the air source 72 and the pulsating vibration air
generation apparatus 1, a binder spray means 75 and a heating means
76.
[0326] Blower is used as the air source 72 in the fluid-bed
granulation apparatus 71.
[0327] One end of the pipe T1 is connected to the air communication
port (see the air communication port h2a in FIG. 5) of the
pulsating vibration air generation apparatus 1 and the other end
thereof is connected to the discharge port of the air source
(blower) 52.
[0328] Catch basin 77 formed with a porous body is provided at the
lower part of the granulation tank 74.
[0329] Air inflow port h74a is provided lower than the catch basin
77 in the granulation tank 74.
[0330] Air discharge port h74b is provided at the top of the
granulation tank 74.
[0331] The member indicated with the reference numeral 78 in FIG.
12 is a bag filter provided so as to prevent the powder material
and the material under granulation from being emitted to the
atmosphere while the powder material stored in the granulation tank
74 is granulated and the bag filter 78 is provided at the upper
part in the granulation tank 78.
[0332] One end of the pipe T2 is connected to the air communication
port (see the air communication port h2b in FIG. 5) of the
pulsating vibration air generation apparatus 1 and the other end of
the pipe T2 is connected to the air inflow port h74a of the
granulation tank 74.
[0333] The filter 73 is provided in removing the dust in the
atmosphere and is provided in midstream of the pipe T2.
[0334] The heating means 76 is provided in heating the pulsating
vibration air of positive pressure which is to be supplied to the
air inflow port h74a of the granulation tank 74 with a view to
obtain the resultant product by drying the powder under granulation
or the granulated material (granule) when the powder material put
in the granulation tank 74 is granulated. In this embodiment, the
heating means 76 is provided in midstream of the pipe T2.
[0335] The binder spray means 75 is provided at a fixed position in
the granulation tank 74.
[0336] Air source 79 for spraying a binder solution and a control
means 80 for supplying the liquid are connected to the binder spray
means 75.
[0337] The air source 79 for spraying a binder solution is designed
to control the supply amount of compressed gas to be supplied to
the binder spray means 75 to be a fixed supply amount.
[0338] The control means 80 for liquid supply is connected to a
storage tank 81 of a binder solution so as to supply a fixed amount
of binder solution stored in the storage tank 81 of a binder
solution to the binder spray means 75.
[0339] For spraying a binder from the binder spray means 75, the
air source 79 for spraying a binder solution is driven at a fixed
drive amount and the control means 80 for liquid supply is driven
at a fixed drive amount.
[0340] Then, a fixed amount of binder solution stored in the
storage tank 81 of a binder solution is supplied into the binder
spray means 75 from the control means 80 for liquid supply and a
fixed amount of compressed gas is supplied into the binder spray
means 75 from the air source 79 for spraying a binder solution, so
that a drop of a binder solution is sprayed from the binder spray
means 75 like a mist at a fixed spray amount.
[0341] Next, the method for granulating the powder material
(primary particle) stored on the catch basin 77 in the granulation
tank 74 into a granulated material (granule, namely secondary
particle) is exemplified.
[0342] At first the powder material (primary particle) as a raw
material is put in the catch basin 77 in the granulation tank
74.
[0343] Simultaneously a binder solution with a fixed concentration
is put in the storage tank 81 of binder solution.
[0344] Next, the air source (blower) 72 is driven at a fixed drive
amount.
[0345] The rotary drive means (not shown) connected to the rotary
shaft 3b of the pulsating vibration air generation apparatus 1 is
also driven to be rotated at a fixed drive amount.
[0346] Thus, a predetermined pulsating vibration air of positive
pressure is generated in the pneumatic transport pipe (piping)
T2.
[0347] The powder material (first particle) on the catch basin 77
in the granulation tank 74 is controlled to be uniformly mixed with
the pulsating vibration air of positive pressure to be dispersed
and fluidized by controlling the drive amount of air source
(blower) 72 and the drive amount of rotary drive means (not shown)
connected to the rotary shaft 3b of the pulsating vibration air
generation apparatus 1.
[0348] Then, according to a predetermined operation program, the
heating means is heated and the pulsating vibration air of positive
pressure supplied to the air inflow port h74a of the granulation
tank 74 is heated.
[0349] Further, according to the predetermined operation program, a
binder drop is sprayed from the binder spray means 75 like a mist
at a fixed spray amount.
[0350] After the powder material (first particle) in the
granulation tank 74 is grown to a granulated material with a
desired particle diameter (granule, namely secondary particle), the
binder drop is stopped to be sprayed from the binder spray means
75, then the pulsating vibration air of positive pressure heated to
a fixed temperature is supplied into the granulation tank 74
according to the predetermined operation program until the
granulated material (granule, namely secondary particle) is dried
well.
[0351] Then, the positive pulsating vibration air of positive
pressure is stopped to be supplied in the granulation tank 74, the
temperature in the granulation tank 74 is returned to a room
temperature, and the granulated material (granule, namely secondary
particle) is taken out of the granulation tank 74 into a desired
place (for example, a storage tank).
[0352] According to this fluid-bed granulation apparatus 71, the
pulsating vibration air generation apparatus of positive pressure
is generated with the pulsating vibration air generation apparatus
1, so that the pulsating vibration air of positive pressure
generated by the pulsating vibration air generation apparatus of
the present invention is hardly attenuated.
[0353] Therefore, even if the pipe T2 is long in the fluid-bed
granulation apparatus 71, a pulsating vibration air of positive
pressure that is hardly attenuated is supplied in the granulation
tank 74 through the pipe T2.
[0354] So, it does not occur that the powder material (first
particle) which is a raw material on the catch basin 77 in the
granulation tank 74 is blown up to the upper part of the
granulation tank 74 or is blown up relatively lower in the
granulation tank 74 like blow hole phenomenon because of the strong
and weak pulsation of the positive pulsating vibration air supplied
from the air inflow port h74a of the granulation tank 74.
Therefore, the powder material (first particle) is mixed with the
pulsating vibration air of positive pressure to be dispersed and
fluidized without causing blow hole phenomenon.
[0355] The fluid-bed granulation apparatus 71 easily fluidized the
powder material (first particle) as a raw material to be granulated
which is put on the catch basin 77 in the granulation tank 74, so
that an objective granulation material (granule, namely second
particle) can be efficiently produced from the powder material
(first particle) to be granulated with the fluid-bed granulation
apparatus 71.
[0356] Further, using the fluid bed granulation apparatus 71, the
powder material (first particle) that has been difficult to be
fluidized is easily fluidized, thereby producing the granulation
material (granule, namely second particle) of the powder material
(first particle) that has been considered to be difficult to be
produced in the prior art.
[0357] According to the fluid-bed granulation apparatus 71, while
the pulsating vibration air of positive pressure is generated, the
pulsating vibration air generation apparatus 1 itself does not
cause any vibration, so that the pipe T2 connected to the pulsating
vibration air generation apparatus and the granulation tank 74
connected to the pipe T2 are scarcely vibrated.
[0358] Further, according to the fluid-bed granulation apparatus
71, when the granulation operation is executed for a long time, the
connected parts of the members constituting the fluid-bed
granulation apparatus 71 are not loosened, staggered, or
removed.
[0359] The above-mentioned pneumatic transportation apparatus 51,
powder removing apparatus 61, and fluid-bed granulation apparatus
71 are only exemplifications of the usage of the pulsating
vibration air generation apparatus according to the present
invention. The pulsating vibration air generation apparatus of the
present invention can be used for the apparatus that requires a
pulsating vibration air sharply and quickly controlled in turning
on and off operation at a fixed frequency with sharp and hardly
attenuated peak and valley.
[0360] In each one of the pneumatic transportation apparatus 51,
the powder removing apparatus 61, and the fluid-bed granulation
apparatus 71, an embodiment using the pulsating vibration air
generation apparatus 1 as the pulsating vibration air generation
apparatus according to the present invention is explained. However,
it goes without saying that the pulsating vibration air generation
apparatus 1A and the pulsating vibration air generation apparatus
1B may be used in place of the pulsating vibration air generation
apparatus 1 in each one of the pneumatic transportation apparatus
51, the powder removing apparatus 61, and the fluid-bed granulation
apparatus 71.
[0361] Industrial Applicability
[0362] As mentioned above, according to the pulsating vibration air
generation apparatus of the present invention, the rotary body with
a communication passage is rotated in the tubular hollow space
provided in the main body of pulsating vibration air generation
apparatus in such a manner the periphery side of the rotary body
slides on the inner surface forming the tubular hollow space in the
main body. When the two air communication ports provided in the
main body of pulsating vibration air generation apparatus are
communicated by the communication passage provided in the rotary
body and the compressed gas supplied from one of the two air
communication port provided in the main body of pulsating vibration
air generation apparatus is discharged from the other air
communication port. When one of the two air communication ports is
inhaled, an inhaled air flow is generated at the other air
communication port. Therefore, a pulsating vibration air of
positive pressure or negative pressure sharply and quickly
controlled in turning on and off operation at a fixed frequency
with sharp and hardly attenuated peak and valley can be generated
with the pulsating vibration air generation apparatus.
[0363] Further, according to this pulsating vibration air
generation apparatus, open and close operations of the two air
communication ports provided in the main body of pulsating
vibration air generation apparatus can be achieved by the rotation
of the rotary body with the communication passage, so that the
pulsating vibration air generation apparatus itself hardly causes
any remarkable vibration while a pulsating vibration air of
positive pressure or of negative pressure is generated.
[0364] As the result, the pulsating vibration air generation
apparatus can be preferably used for the apparatus using a
pneumatic power such as a pneumatic transportation apparatus, a
powder removing apparatus, and a fluid-bed granulation apparatus
which require a pulsating vibration air of positive pressure or
negative pressure sharply and quickly controlled in turning on and
off operation at a fixed frequency with sharp and hardly attenuated
peak and valley, and which need not application of vibration
thereon.
[0365] In the pulsating vibration air generation apparatus of the
present invention, the outer surface on which each one of the two
air communication holes of the main body of pulsating vibration air
generation apparatus mentioned above is provided is flat,
therefore, there generates no gap for the connected part of the
main body of pulsating vibration air generation apparatus and each
pipe when a pipe is connected to each one of the two air
communication ports of the main body respectively.
[0366] Therefore, dust and other powder are not gathered at the
connected part of each pipe and the main body of pulsating
vibration air generation apparatus, thereby keeping the pulsating
vibration air generation apparatus clean. Further, the clean room
or other room in which the pulsating vibration air generation
apparatus is provided is kept clean for a long time.
[0367] In the pulsating vibration air generation apparatus of the
present invention, the above-mentioned pulsating vibration air
generation apparatus is used, and the compressed air source is
connected to one of the two air communication ports of the main
body of pulsating vibration air generation apparatus, when the
exhaling air source is driven to rotate the rotary body at a fixed
rotation speed in the main body, a pulsating vibration air of
positive pressure which sharply and quickly controlled in turning
on and off operation at a fixed frequency with sharp and hardly
attenuated peak and valley can be generated from the other one of
the two air communication ports provided in the main body.
[0368] Open and close operations of the two air communication holes
provided in the main body of pulsating vibration air generation
apparatus are achieved by the rotation of the rotary body having
the communication passage, therefore, the pulsating vibration air
generation apparatus itself scarcely causes any remarkable
vibration while a positive pulsating vibration air is
generated.
[0369] In the pulsating vibration air generation apparatus of the
present invention, the above-mentioned pulsating vibration air
generation apparatus is used, and the inhaling air source is
connected to one of the two air communication port of the main body
of pulsating vibration air generation apparatus, when the inhaling
air source is driven to rotate the rotary body at a fixed rotation
speed in the main body, a pulsating vibration air of negative
pressure which sharply and quickly controlled in turning on and off
operation at a fixed frequency with sharp and hardly attenuated
peak and valley can be generated from the other one of the two air
communication holes provided in the main body.
[0370] Open and close operations of the two air communication holes
provided in the main body of pulsating vibration air generation
apparatus are achieved by the rotation of the rotary body having
the through hole, therefore, the pulsating vibration air generation
apparatus itself scarcely causes any remarkable vibration while a
negative pulsating vibration air is generated.
[0371] In the pulsating vibration air generation apparatus of the
present invention, the packing member for airtightly sealing
between the rotary shaft and the shaft hole formed in the main body
of pulsating vibration air generation apparatus is provided. When a
compressed gas is supplied from one of the two air communication
port provided in the main body of pulsating vibration air
generation apparatus in order to produce a pulsating vibration air
of positive pressure, the compressed gas thus supplied from one air
communication port does not leak to the atmosphere from the
connection of the rotary shaft and the shaft hole formed in the
main body. In addition, when one of the two air communication ports
provided in the main body of pulsating vibration air generation
apparatus is inhaled in order to produce a pulsating vibration air
of negative pressure, the atmospheric air is not inhaled from the
connection of the rotary shaft and the shaft hole provided in the
main body.
[0372] Therefore, according to thus constructed pulsating vibration
air generation apparatus, even when a positive pulsating vibration
air is generated or a negative pulsating vibration air is
generated, a positive or a negative pulsating vibration air can be
generated while reducing the energy loss against the driving amount
of air source (a compressed air source for generating a positive
pulsating vibration air and an inhaling air source for generating a
negative pulsating vibration air).
* * * * *